{"id":533,"date":"2026-06-15T18:37:25","date_gmt":"2026-06-15T18:37:25","guid":{"rendered":"https:\/\/360dialogblog.com\/?p=533"},"modified":"2026-07-06T06:11:03","modified_gmt":"2026-07-06T06:11:03","slug":"nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026","status":"publish","type":"post","link":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/","title":{"rendered":"WhatsApp usernames: here\u2019s what it actually means for your business (2026)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>LIVE ARTICLE &#8211; REGULARLY UPDATED. Meta is rolling out usernames in phases throughout 2026. We update this page every time new information is officially confirmed. Last updated: March 2026.    <\/em><\/p>\n\n<p class=\"wp-block-paragraph\">Meta is rolling out WhatsApp usernames throughout 2026. This article covers what that means for your systems, your customers, and what you need to do <\/p>\n\n<h2 id=\"tldr-whatsapp-usernames-explained\" class=\"wp-block-heading\">TL;DR: WhatsApp usernames explained<\/h2>\n\n<p class=\"wp-block-paragraph\">Read this if you have 60 seconds. Come back to the full article when you\u2019re ready to act. <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Meta is introducing WhatsApp usernames. Customers will be able to <strong>hide their phone numbers<\/strong> when messaging businesses. <\/li>\n\n\n\n<li>When that happens, you\u2019ll need to use a new identifier called <strong>Business-Scoped User IDs (BSUID)<\/strong> instead of phone numbers.<\/li>\n\n\n\n<li>For an easier transition &amp; intercompatibility between BSUIDs and phone numbers, Meta will also launch a feature called the <strong>Contact Book.<\/strong> It automatically maps customers\u2019 phone numbers to BSUIDs from conversation events even before username adoption begins, so most of your base is already protected automatically.<\/li>\n\n\n\n<li>The April &#8211; June period will be a <strong>live testing and adoption window.<\/strong> BSUIDs will be visible in <a href=\"https:\/\/docs.360dialog.com\/docs\/messaging\/webhook\" target=\"_blank\" rel=\"noreferrer noopener\">webhooks<\/a>, Contact Books will be building up mappings, but username adoption won\u2019t start yet. Use this time to understand the change, not to panic-build. <\/li>\n\n\n\n<li>Nothing breaks until username adoption begins in <strong>June 2026<\/strong> and even then, only for net new conversations from users who have adopted usernames.<\/li>\n\n\n\n<li><a href=\"https:\/\/360dialog.com\/\">360Dialog<\/a> will provide full specs, examples, and implementation support as the rollout happens. <strong>You won\u2019t have to figure this out alone.<\/strong><\/li>\n\n\n\n<li>Phone numbers are not disappearing. Existing customers and outbound messaging to known numbers <strong>are not affected.<\/strong> <\/li>\n<\/ul>\n\n<h2 id=\"what-is-actually-changing-with-whatsapp-usernames-and-why\" class=\"wp-block-heading\">What is actually changing with WhatsApp usernames and why<\/h2>\n\n<p class=\"wp-block-paragraph\">For years, WhatsApp has worked on a simple principle: <strong>your phone number is your identity.<\/strong> Every account, every conversation, every business interaction has been tied to a number.<\/p>\n\n<p class=\"wp-block-paragraph\">That is about to change by design, and for a good reason.<\/p>\n\n<p class=\"wp-block-paragraph\">Meta research showed that control over personal information is one of users\u2019 top concerns when using WhatsApp. Many people don\u2019t want to share their phone number with every business they message. Usernames give them that choice.  <\/p>\n\n<p class=\"wp-block-paragraph\">Starting mid-2026, users will be able to choose a username (a handle like <em>@AliceWhitman<\/em>) and use it to message businesses without revealing their phone number. It is <strong>optional.<\/strong> Adoption will be gradual. And the platform has been designed with a transition period specifically so businesses can adapt without disruption.  <\/p>\n\n<p class=\"wp-block-paragraph\">In practice, this means your system will start receiving a <a href=\"https:\/\/developers.facebook.com\/documentation\/business-messaging\/whatsapp\/business-scoped-user-ids\/\"><strong>Business-Scoped User ID (BSUID)<\/strong><\/a> alongside phone numbers, and later on only BSUIDs after the user in question adopts a username. Understanding the changes and how they will be rolling out is what this guide is for. <\/p>\n\n<h2 id=\"two-things-you-need-to-understand-first\" class=\"wp-block-heading\">Two things you need to understand first<\/h2>\n\n<p class=\"wp-block-paragraph\">Before getting into timelines and what to update, two concepts need to be clear. Everything else builds on them. <\/p>\n\n<h3 id=\"1-usernames-are-not-the-same-as-display-names\" class=\"wp-block-heading\">1. Usernames are not the same as Display Names<\/h3>\n\n<p class=\"wp-block-paragraph\">This is the most common point of confusion, so let\u2019s be clear about it.<\/p>\n\n<p class=\"wp-block-paragraph\">Your <strong>Display Name<\/strong> is the business name your customers see inside the WhatsApp chat. It is tied to your business profile and phone number.  <strong>This will not be changing.<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Usernames <\/strong>are different. For regular WhatsApp users, they\u2019re searchable handles, a new entry point that lets them find and start conversations with their friends and businesses without needing a phone number. Think of it like a @handle on Instagram or Telegram.  <\/p>\n\n<p class=\"wp-block-paragraph\">One important thing to clarify: <strong>Businesses won\u2019t be able to target users via usernames.<\/strong> Business messaging will continue to work through platform identifiers (phone numbers and BSUIDs). What changes is how conversations start, and what identifier arrives when they do. <\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"608\" src=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-1024x608.avif\" alt=\"A side-by-side comparison of how WhatsApp usernames look now and how they will look in the future. \" class=\"wp-image-512\" srcset=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-1024x608.avif 1024w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-300x178.avif 300w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-768x456.avif 768w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-1536x913.avif 1536w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-WhatsApp-username-looks-now-vs-how-it-will-look-in-the-future-2048x1217.avif 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h3 id=\"2-what-is-a-bsuid-and-why-does-it-matter\" class=\"wp-block-heading\">2. What is a BSUID and why does it matter?<\/h3>\n\n<p class=\"wp-block-paragraph\">The simplest way to think about this: <em>WhatsApp is moving away from \u201cphone number = identity.\u201d<\/em><\/p>\n\n<p class=\"wp-block-paragraph\">When a user adopts a username, their phone number is no longer automatically shared with businesses. WhatsApp sends a <strong>Business-Scoped User ID (BSUID)<\/strong> instead, a unique identifier that represents that user specifically within the context of your business portfolio. <\/p>\n\n<p class=\"wp-block-paragraph\">Three things to know about BSUIDs:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>They are unique.<\/strong> No two users share the same BSUID.<\/li>\n\n\n\n<li><strong>They are scoped to your business portfolio.<\/strong> The same customer has a different BSUID with every business they interact with. This is intentional, it keeps identity stable inside your conversations without exposing a universal key. <\/li>\n\n\n\n<li><strong>They will appear in all webhooks from March 31 onwards,<\/strong> regardless of whether a user has adopted a username. This gives you time to see them, test your parsing, and understand what they look like in real webhook payloads before anything actually depends on them. <\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"588\" src=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-1024x588.avif\" alt=\"Comparing different choices for the WhatsApp username. Currently, there is phone number only, and in the future you will be able to choose between phone number (not adopting a username), and adopting a username.  \" class=\"wp-image-514\" srcset=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-1024x588.avif 1024w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-300x172.avif 300w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-768x441.avif 768w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-1536x882.avif 1536w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Different-choices-for-WhatsApp-usernames-2048x1176.avif 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 id=\"how-the-transition-to-username-works\" class=\"wp-block-heading\">How the transition to username works<\/h2>\n\n<p class=\"wp-block-paragraph\">This is the part that matters most for understanding your real exposure and why the timeline is more forgiving than it may seem.<\/p>\n\n<h3 id=\"april-june-2026-the-adoption-window\" class=\"wp-block-heading\">April &#8211; June 2026: the adoption window<\/h3>\n\n<p class=\"wp-block-paragraph\">When the Contact Book launches in April, it immediately starts doing something valuable: it <strong>automatically stores the mapping between your customers\u2019 phone numbers and their BSUIDs<\/strong> every time you have an interaction with them.<\/p>\n\n<p class=\"wp-block-paragraph\">This happens in the background, by default, for all businesses. You don\u2019t need to build anything for it to work. <\/p>\n\n<p class=\"wp-block-paragraph\">During the April &#8211; June period, usernames won\u2019t be available for users to claim. This means that BSUIDs will become visible in your webhooks for all message events, Contact Books will build up mappings, but customers will still be identified by phone numbers in your existing flows. In practice, <strong>nothing changes for your messaging during this period.<\/strong>  <\/p>\n\n<p class=\"wp-block-paragraph\">This window exists so you can observe BSUIDs in real webhook data, understand what they look like, and start planning your implementation at your own pace, with real examples to work from.<\/p>\n\n<p class=\"wp-block-paragraph\">In practice, this means: even if you don\u2019t implement any BSUID handling during April and May, your Contact Book has already been building mappings for all your existing customers. When you do implement (whether that\u2019s in May, June, or later) you\u2019ll have a solid foundation of mapped identifiers already waiting for you. <\/p>\n\n<h3 id=\"from-june-2026-when-username-adoption-begins\" class=\"wp-block-heading\">From June 2026: when username adoption begins<\/h3>\n\n<p class=\"wp-block-paragraph\">This is when usernames become available to users in test countries, and gradually expand globally. As users adopt usernames, their phone numbers stop being automatically shared with businesses they message. <\/p>\n\n<p class=\"wp-block-paragraph\">At this point, two flows will break <strong>for users who have adopted a username<\/strong> if your system isn\u2019t handling BSUIDs:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Messages from <a href=\"https:\/\/docs.360dialog.com\/docs\/whatsapp-marketing\/ads-that-click-to-whatsapp-ctwa\" target=\"_blank\" rel=\"noreferrer noopener\">click-to-WhatsApp (CTWA) ads<\/a><\/li>\n\n\n\n<li>Inbound service messages<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">The key qualifier: <strong>username adoption will be gradual.<\/strong> At launch, it will affect a small fraction of your inbound traffic. For existing customers whose phone numbers are already in your Contact Book, continuity is preserved automatically. <\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"295\" src=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-1024x295.avif\" alt=\"A diagram showing the transition of the WhatsApp username\" class=\"wp-image-516\" srcset=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-1024x295.avif 1024w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-300x86.avif 300w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-768x221.avif 768w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-1536x442.avif 1536w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/WhatsApp-username-transition-chart-2048x589.avif 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h3 id=\"what-does-not-change\" class=\"wp-block-heading\">What does not change<\/h3>\n\n<p class=\"wp-block-paragraph\">It is equally important to know what stays the same, regardless of username adoption:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Authentication messages<\/strong> will continue to be sent to phone numbers only, as today.<\/li>\n\n\n\n<li><strong>Customers who have not adopted a username<\/strong> will still be targetable via phone numbers. You continue to receive their phone number in webhook events as normal as well. <\/li>\n\n\n\n<li><strong>Outbound messaging to phone numbers you interacted with in the adoption period <\/strong>still works &#8211; you can continue sending marketing, utility, and authentication messages to known numbers, thanks to the Contact Book.<\/li>\n<\/ul>\n\n<h2 id=\"the-contact-book-your-transition-safety-net\" class=\"wp-block-heading\">The Contact Book: your transition safety net<\/h2>\n\n<p class=\"wp-block-paragraph\">The Contact Book is the feature that makes this transition manageable and it\u2019s <strong>enabled by default for all businesses.<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">From April 2026, every time you send or receive a message with a customer\u2019s phone number, WhatsApp automatically stores the mapping between that phone number and their BSUID in your Contact Book. No action required from you. <\/p>\n\n<p class=\"wp-block-paragraph\">What this means in practice: if a customer later adopts a username, you will still be able to reach out to them using their phone number, as the Contact Book will have their phone number mapped to their BSUID in the background. <strong>Your existing customer relationships are protected automatically.<\/strong><\/p>\n\n<p class=\"wp-block-paragraph\">The one thing to be aware of: for this to work, you must <strong>keep the Contact Book enabled.<\/strong> It is on by default, and we recommend leaving it that way. You can manage this setting in Business Manager starting March 16,, 2026, although it won\u2019t start collecting any data until the webhooks are enriched with the BSUID on March 31t, 2026. <\/p>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"954\" height=\"1024\" src=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-954x1024.png\" alt=\"2 scenarios of how things look before and after introducing contact book to WhatsApp&#10;\" class=\"wp-image-519\" srcset=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-954x1024.png 954w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-279x300.png 279w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-768x825.png 768w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-1431x1536.png 1431w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/Contact-book-before-and-after-scenarios-1908x2048.png 1908w\" sizes=\"auto, (max-width: 954px) 100vw, 954px\" \/><\/figure>\n\n<h2 id=\"what-to-do-and-when\" class=\"wp-block-heading\">What to do and when<\/h2>\n\n<p class=\"wp-block-paragraph\">There is no single deadline for everyone. The right timing depends on your setup and how much traffic you expect from new username-adopting users at launch. <\/p>\n\n<p class=\"wp-block-paragraph\">Here is how to think about it:<\/p>\n\n<h3 id=\"if-you-want-to-get-ahead-of-it\" class=\"wp-block-heading\">If you want to get ahead of it<\/h3>\n\n<p class=\"wp-block-paragraph\">From March 31st, BSUIDs will appear in live webhook responses. This is the ideal time to: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Read the <em>user_id field<\/em> in your webhook responses and log the values, no need to act on them yet, just observe<\/li>\n\n\n\n<li><strong>Add BSUID as a field in your customer profiles<\/strong> alongside phone number<\/li>\n\n\n\n<li><strong>Start mapping BSUIDs to existing records<\/strong> so your CRM is ready when username adoption begins<\/li>\n\n\n\n<li><strong>Update chatbot flows<\/strong> to request phone number via the new native CTA button, for workflows that depend on it<\/li>\n<\/ul>\n\n<h3 id=\"if-youre-not-ready-to-implement-yet\" class=\"wp-block-heading\">If you\u2019re not ready to implement yet<\/h3>\n\n<p class=\"wp-block-paragraph\">That\u2019s fine. The Contact Book is already protecting your existing customer base by default. You\u2019re not missing anything critical during the April &#8211; June adoption window.  <\/p>\n\n<p class=\"wp-block-paragraph\">360Dialog will be releasing <strong>full implementation specs, real webhook examples, and step-by-step guidance<\/strong> as the rollout progresses. You don\u2019t need to implement against hypothetical payloads today. We\u2019ll make sure you have everything you need \u2013 with real data to work from \u2013 before it actually matters for your flows.  <\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Our commitment: <\/strong>we\u2019re between you and the complexity of this rollout so you don\u2019t have to be. We\u2019ll provide docs, examples, and support at every stage. Follow this page for updates as they\u2019re confirmed.  <\/p>\n\n<h2 id=\"a-note-for-businesses-managing-multiple-portfolios\" class=\"wp-block-heading\">A note for businesses managing multiple portfolios<\/h2>\n\n<p class=\"wp-block-paragraph\">BSUIDs are scoped to a business portfolio, not globally. The same customer will have a different BSUID in each portfolio they interact with. <\/p>\n\n<p class=\"wp-block-paragraph\">If you manage multiple clients across different portfolios, this affects identity mapping at scale. The solution is parent BSUIDs a shared identifier across linked portfolios under a parent business account. Reach out to your Meta POC to set this up if it applies to your setup.  <\/p>\n\n<h2 id=\"rollout-timeline\" class=\"wp-block-heading\">Rollout timeline<\/h2>\n\n<p class=\"wp-block-paragraph\">Based on Meta\u2019s official partner communications and 360Dialog\u2019s direct briefings.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>February 16, 2026<\/strong> \u2013 BSUID visible in test webhooks via Meta dashboard. Start getting familiar with the format. <\/li>\n\n\n\n<li><strong>March 16, 2026<\/strong> \u2013 Contact Book setting is manageable in Business Manager. Keep it enabled. <\/li>\n\n\n\n<li><strong>March 31, 2026<\/strong> \u2013 BSUIDs appear in <em>all<\/em> live webhook responses. Testing window opens. Use this period to observe, log, and plan.  <\/li>\n\n\n\n<li><strong>April 2026<\/strong> \u2013 Contact Book starts recording phone-number-to-BSUID mappings automatically. Your existing customer base begins building its safety net. <\/li>\n\n\n\n<li><strong>May 2026<\/strong> \u2013 <a href=\"https:\/\/360dialog.com\/br\/whatsapp-api\" target=\"_blank\" rel=\"noreferrer noopener\">WhatsApp Business API<\/a> support for sending messages via BSUID (pending final confirmation from Meta).<\/li>\n\n\n\n<li><strong>June 2026<\/strong> \u2013 Country-level username testing begins. First users start adopting usernames in test countries. <\/li>\n\n\n\n<li><strong>Rest of 2026<\/strong> \u2013 Global rollout. Username adoption expands for both users and businesses. <\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"445\" src=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-1024x445.avif\" alt=\"A calendar showing what businesses should do and when\" class=\"wp-image-520\" srcset=\"https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-1024x445.avif 1024w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-300x130.avif 300w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-768x334.avif 768w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-1536x667.avif 1536w, https:\/\/360dialogblog.com\/wp-content\/uploads\/2026\/06\/How-businesses-should-prepare-2048x890.avif 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1781072690018\"><strong class=\"schema-faq-question\">If my customer adopts a username, can I still message them?<\/strong> <p class=\"schema-faq-answer\">Yes. If you already have their phone number from a prior conversation, you can continue messaging them regardless of whether they\u2019ve adopted a username. The Contact Book preserves this continuity automatically by storing the phone-number-to-BSUID mapping from all prior interactions.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084241653\"><strong class=\"schema-faq-question\">Do my clients have to do anything? And do I? <\/strong> <p class=\"schema-faq-answer\">Usernames are optional for end users \u2013 no one is required to adopt one. For partners using the WhatsApp Business Platform, you will need to update your systems to handle BSUIDs \u2013 but you have a real transition period to do so, with 360Dialog providing specs and support as the rollout happens. <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084291203\"><strong class=\"schema-faq-question\">Which of my messaging flows could break \u2013 and when?<\/strong> <p class=\"schema-faq-answer\">Two flows can break for users who have adopted a username: messages from CTWA ads and inbound service messages. This only applies once username adoption begins in June 2026 \u2013 and at launch, adoption will be gradual. For existing customers whose phone numbers are in your Contact Book, continuity is preserved automatically.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084662085\"><strong class=\"schema-faq-question\">What is a BSUID and why does my system need to handle it?<\/strong> <p class=\"schema-faq-answer\">The BSUID is a unique identifier WhatsApp assigns to each user, scoped to your business portfolio. When a user adopts a username and stops sharing their phone number, the BSUID is what your system receives instead. Without handling it, you can\u2019t identify or respond to those users.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084717610\"><strong class=\"schema-faq-question\">The Contact Book is enabled by default \u2013 do I need to do anything?<\/strong> <p class=\"schema-faq-answer\">Mostly no. Keep it enabled in Business Manager \u2013 you can manage this setting from March 16, 2026. As long as it\u2019s active, it will automatically build the phone-number-to-BSUID mapping from all your existing customer interactions. No additional setup required.   <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084746458\"><strong class=\"schema-faq-question\">We use click-to-WhatsApp ads. What changes for us? <\/strong> <p class=\"schema-faq-answer\">CTWA-initiated conversations from users who have adopted a username will require your system to handle a BSUID instead of a phone number. This starts becoming relevant from June 2026 as username adoption begins. 360Dialog will provide specific implementation guidance for this scenario as the rollout approaches.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084774719\"><strong class=\"schema-faq-question\">We built our CRM around phone numbers. Where do we start? <\/strong> <p class=\"schema-faq-answer\">Start by adding a BSUID field to your customer profiles and updating your webhook parsing to read the user_id field. Don\u2019t remove phone numbers \u2013 you\u2019ll need both. 360Dialog will release step-by-step CRM integration guides with real payload examples during the testing window.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084805651\"><strong class=\"schema-faq-question\">What is the real deadline?<\/strong> <p class=\"schema-faq-answer\">The practical answer: before username adoption becomes significant in your markets. June 2026 is when country-level testing begins, and adoption will be gradual from there. The April\u2013June window is specifically designed for implementation without disruption. 360Dialog will keep you informed of what\u2019s happening in which markets as the rollout progresses.   <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084834358\"><strong class=\"schema-faq-question\">We manage multiple clients across different portfolios. Will the same customer have a different ID in each one? <\/strong> <p class=\"schema-faq-answer\">Yes. BSUIDs are scoped per business portfolio, so the same customer will appear with a different BSUID in each portfolio. If you need a shared identifier across linked portfolios, Meta offers a parent BSUID solution, reach out to your Meta POC.  <\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1781084918851\"><strong class=\"schema-faq-question\">If a customer sets a username key, can I still reach them?<\/strong> <p class=\"schema-faq-answer\">Yes. Businesses using the WhatsApp Business Platform are exempt from username keys \u2013 your existing BSUID or phone number already demonstrates an established connection and bypasses the key requirement automatically. <\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>LIVE ARTICLE &#8211; REGULARLY UPDATED. Meta is rolling out usernames in phases throughout 2026. We update this page every time new information is officially confirmed. Last updated: March 2026. Meta is rolling out WhatsApp usernames throughout 2026. This article covers what that means for your systems, your customers, and what you need to do TL;DR: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":531,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[116,118,123,122],"class_list":["post-533","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-atualizacoes-de-produtos-whatsapp","tag-bsuid","tag-integracao-com-crm","tag-meta-updates","tag-whatsapp-usernames"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>WhatsApp usernames: here\u2019s what it actually means for your business | 360Dialog<\/title>\n<meta name=\"description\" content=\"meta\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" 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When a user adopts a username and stops sharing their phone number, the BSUID is what your system receives instead. Without handling it, you can\u2019t identify or respond to those users.  \",\"inLanguage\":\"pt-BR\"},\"inLanguage\":\"pt-BR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/360dialog.com\\\/blog\\\/br\\\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\\\/#faq-question-1781084717610\",\"position\":5,\"url\":\"https:\\\/\\\/360dialog.com\\\/blog\\\/br\\\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\\\/#faq-question-1781084717610\",\"name\":\"The Contact Book is enabled by default \u2013 do I need to do anything?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Mostly no. Keep it enabled in Business Manager \u2013 you can manage this setting from March 16, 2026. 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my customer adopts a username, can I still message them?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. If you already have their phone number from a prior conversation, you can continue messaging them regardless of whether they\u2019ve adopted a username. The Contact Book preserves this continuity automatically by storing the phone-number-to-BSUID mapping from all prior interactions.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084241653","position":2,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084241653","name":"Do my clients have to do anything? And do I?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Usernames are optional for end users \u2013 no one is required to adopt one. For partners using the WhatsApp Business Platform, you will need to update your systems to handle BSUIDs \u2013 but you have a real transition period to do so, with 360Dialog providing specs and support as the rollout happens. ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084291203","position":3,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084291203","name":"Which of my messaging flows could break \u2013 and when?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Two flows can break for users who have adopted a username: messages from CTWA ads and inbound service messages. This only applies once username adoption begins in June 2026 \u2013 and at launch, adoption will be gradual. For existing customers whose phone numbers are in your Contact Book, continuity is preserved automatically.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084662085","position":4,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084662085","name":"What is a BSUID and why does my system need to handle it?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The BSUID is a unique identifier WhatsApp assigns to each user, scoped to your business portfolio. When a user adopts a username and stops sharing their phone number, the BSUID is what your system receives instead. Without handling it, you can\u2019t identify or respond to those users.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084717610","position":5,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084717610","name":"The Contact Book is enabled by default \u2013 do I need to do anything?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Mostly no. Keep it enabled in Business Manager \u2013 you can manage this setting from March 16, 2026. As long as it\u2019s active, it will automatically build the phone-number-to-BSUID mapping from all your existing customer interactions. No additional setup required.   ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084746458","position":6,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084746458","name":"We use click-to-WhatsApp ads. What changes for us?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"CTWA-initiated conversations from users who have adopted a username will require your system to handle a BSUID instead of a phone number. This starts becoming relevant from June 2026 as username adoption begins. 360Dialog will provide specific implementation guidance for this scenario as the rollout approaches.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084774719","position":7,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084774719","name":"We built our CRM around phone numbers. Where do we start?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Start by adding a BSUID field to your customer profiles and updating your webhook parsing to read the user_id field. Don\u2019t remove phone numbers \u2013 you\u2019ll need both. 360Dialog will release step-by-step CRM integration guides with real payload examples during the testing window.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084805651","position":8,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084805651","name":"What is the real deadline?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The practical answer: before username adoption becomes significant in your markets. June 2026 is when country-level testing begins, and adoption will be gradual from there. The April\u2013June window is specifically designed for implementation without disruption. 360Dialog will keep you informed of what\u2019s happening in which markets as the rollout progresses.   ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084834358","position":9,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084834358","name":"We manage multiple clients across different portfolios. Will the same customer have a different ID in each one?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. BSUIDs are scoped per business portfolio, so the same customer will appear with a different BSUID in each portfolio. If you need a shared identifier across linked portfolios, Meta offers a parent BSUID solution, reach out to your Meta POC.  ","inLanguage":"pt-BR"},"inLanguage":"pt-BR"},{"@type":"Question","@id":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084918851","position":10,"url":"https:\/\/360dialog.com\/blog\/br\/nomes-de-usuario-do-whatsapp-o-que-isso-realmente-significa-para-a-sua-empresa-2026\/#faq-question-1781084918851","name":"If a customer sets a username key, can I still reach them?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. Businesses using the WhatsApp Business Platform are exempt from username keys \u2013 your existing BSUID or phone number already demonstrates an established connection and bypasses the key requirement automatically. 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