30538: A message sample is missing for a selected use case

This error applies to both Toll-Free Verification and A2P 10DLC registration.

You selected multiple use cases but provided a sample message for only one. Each selected use case needs its own sample.

• The selected use cases mix content types, such as marketing and informational, but only one sample message was provided.

• Provide a unique message sample for each use case you selected, then resubmit.

• A2P 10DLC Campaign Onboarding Guide
• Toll-Free Verification Onboarding Guide