AWS surfaces conditional field requirements in messaging registration responses

AWS End User Messaging registration API responses now identify required fields based on values supplied in other fields, according to an October 16, 2026 announcement. The update also adds compliance examples and a walkthrough for recording the video required for RCS agent registrations.

AWS says incomplete compliance evidence and missed required fields often cause registration submissions to be delayed or denied. The changes address both submission content and field requirements.

What AWS added

The announcement describes three improvements:

• Compliance examples: Mock-ups of compliant opt-in flows and sample messages are now included for US 10DLC, US short code, US toll-free and RCS registrations.
• Conditional requirements: The registration API response surfaces conditional logic and identifies which fields are required for a specific registration based on other field values.
• RCS video guidance: RCS registration now includes a walkthrough for recording the compliant video required for agent registrations.

What this means for registration tooling

For engineers maintaining registration clients, the conditional requirements are the most actionable part of the update. A useful next step is to inspect how the returned requirements map to existing forms and validation logic, then assess whether they can help flag missing dependent fields before submission.

That is an implementation opportunity, not a documented integration recipe: the announcement does not identify a specific API operation or show a response payload.

Keep field completeness and evidence quality as separate checks. Use the examples and video walkthrough to review submission content, rather than assuming that satisfying required-field checks establishes compliance.

Availability and limits

AWS says the improvements are available in all Regions where AWS End User Messaging registrations are available.

The announcement reports no measured reduction in rejection rates or approval times. The concrete change is clearer submission guidance and more explicit field requirements—not demonstrated faster approvals.