Changelog
October 16, 2026
Added WhatsApp number migration guide
Added a number migration guide covering the definitions and requirements for the source WABA, phone number, and target WABA, along with migration impact, preparation, and steps to turn off two-step verification and migrate the number.
👉WhatsApp Number Migration Guide
September 8, 2026
Business-Scoped User ID (BSUID) and Business Username
- Sending Number Management — Added business username and status display.
- Send Message and Session Chat — Added support for sending messages, creating conversations, and searching for customers using BSUIDs.
- History — Added support for searching message records and viewing recipient information using BSUIDs.
- WhatsApp Business Username Guide (FAQ) — Added instructions for claiming a business username.
- Message Sending API — Added BSUID recipient requirements, an example combining phone numbers and BSUIDs, and authentication template restrictions.
- Message Callback API — Updated callback field descriptions and examples for BSUIDs, phone numbers, and usernames.
Registration flow and screenshot updates
- Overview Guide — Updated the Business API registration steps and screenshots.
- WhatsApp Business App Coexistence — Updated the coexistence onboarding steps and screenshots.
August 21, 2026
Added business username display
The Configuration Management > Sending Number Management page now displays the business username and status of each sending number. Business usernames are claimed or changed through Meta Business Suite, WhatsApp Manager, or the Meta API; EngageLab currently retrieves and displays the result only.
👉Sending Number Management 👉WhatsApp Business Username Guide
August 3, 2026
Added custom tags for templates
You can now add custom tags to WhatsApp message templates to group and filter them. Tags apply only on the EngageLab side: they do not change template content and do not trigger re-review by Meta.
- Console: on the Message Center > Message Templates page, you can create, assign, edit, and delete tags, and filter templates by tag ("Ungrouped" refers to templates with no tags assigned). Each WABA supports up to 20 tags, and a template can be assigned multiple tags.
- Template Management API: five new endpoints — Get Template Tag List, Create Template Tag, Update Template Tag, Delete Template Tag, and Set Template Tags. Get Template List now supports filtering by
tag_id, and both the template list and template details responses include a newtagsfield.
👉Message Templates 👉Template Management API
Restructured the error codes documentation
The error codes documentation is now split by source into Meta Official Error Codes and EngageLab Platform Error Codes. Meta error codes are further grouped into rate and throughput limits, account and permissions, sending and recipients, templates and Flows, phone number registration and verification, and sender number status, with the meaning, description, and recommended action given for each code. Common codes such as 4, 80007, 130429, 131048, 131056, 131064, 130403, 130497, 131031, 131063, 132018, and 133016 have been added.
June 11, 2026
Added WhatsApp Business App Coexistence
You can now connect a number already in use in the WhatsApp Business App to the API, allowing the same number to send and receive messages on both the API and the App at the same time.
