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

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.
 

Product Information

Learn more about Toll-Free Numbers from Sinch.