Below is a list of all common SMS error messages you might receive when texting on Relate. 

If you have repeated issues with your messages being filtered or blocked by your carrier, see Understanding Message Blocking and Carrier Filtering.

Error Definitions

DELIVERY_FILTERED_FAILURE = "Error: SMS Not Delivered - Your message could not be delivered due to content filtering by the carriers. Please ensure that your message complies with policies and guidelines. If you believe your message follows the guidelines and the issue persists, please contact support for further assistance."

DELIVERY_FAIL_NOT_SPECIFIC_REASON = "Error: SMS Not Delivered - Your message could not be delivered due to content filtering by the carriers. This could also be a prepaid user whose account is out of money, or a subscriber that is provisioned to not receive this type of SMS. It's important to ensure that the numbers you are sending messages to are active and up-to-date."

DELIVERY_CONTENT_SIZE_EXCEEDED = "Error: SMS Not Delivered – Your message is too long to be sent and was rejected by the carrier. Please shorten your message and try again."

DELIVERY_CARRIER_CONGESTION = "Error: SMS Not Delivered – The downstream carrier network is currently congested due to high traffic and could not process your message. Please try again later."

DELIVERY_SMS_MMS_NOT_SUPPORTED = "Error: Message Not Delivered – The destination number does not support messaging (SMS or MMS) or has it disabled. Please try sending a standard SMS instead."

DELIVERY_SENDER_NUMBER_NOT_PROVISIONED = "Error: SMS Not Delivered – The sender number is not provisioned with the carrier. Please ensure your number is properly registered and approved for messaging in this region. If the issue persists, please contact support for further assistance."

DELIVERY_MESSAGE_BLOCKED = "Error: SMS Not Delivered – The message was blocked by the carrier or the recipient's device. This may be due to signal issues, number opt-outs, DND restrictions, or unsupported devices like landlines."

DELIVERY_RECEIPT_TIMEOUT = "Error: SMS Delivery Unknown – Timed out waiting for a delivery receipt. The delivery status could not be confirmed, possibly due to a delayed or missing response from the carrier."

DELIVERY_INCOMPLETE_SEGMENTS = "Error: SMS Not Delivered – Parts of a multipart message were lost due to network or device issues. The full message could not be received."

A2P_NOT_READY = "Error: SMS Not Delivered – The sender number is not provisioned with the carrier. Please ensure your number is properly registered and approved for messaging in this region."