What error code will I see if my TFN messages are rejected for exceeding messaging limits?

[Meredith_W]

Toll-Free numbers that are Pending Verification and are sending traffic will receive Sinch error code 64 "Blocked due to exceeded quota". 

Effective Jan 31, 2024, all toll-free numbers must be in a Verified state in order to originate traffic. For more info refer to What are the traffic restrictions for Unverified and Pending Verification TFNs?

Please see Toll-Free delivery report errors on the Sinch Developer site for a complete list of Toll-Free specific error codes.

[#2]

Unverified toll-free numbers (TFNs) and Pending Verification toll-free numbers (TFNs) are subject to industry-wide message blocking. Unverified toll-free numbers are TFNs that have not completed the toll-free sender verification process. Pending Verification toll-free numbers are TFNs where a verification request has been submitted, but the request is pending review and approval. 

Note: In the past it was possible to send messages from an Unverified TFN or Pending Verification TFN. However, as a result of industry-wide changes, all toll-free numbers, regardless of the use case, must be Verified to originate traffic.

UNVERIFIED toll-free numbers (TFNs) are subject to industry-wide message blocking, effective November 8, 2023.

PENDING VERIFICATION toll-free numbers (TFNs) are subject to industry-wide message blocking, effective January 31, 2024.

All toll-free numbers (TFNs) must be in a VERIFIED state in order to originate traffic.

Unverified TFNs and TFNs pending verification will be blocked with Sinch error code 64 “Blocked due to exceeded quota”. Please see Toll-Free Delivery Report Errors for a full list of Sinch Toll-Free error codes.