21612: Message cannot be sent with the current combination of “To” and/or “From” parameters

Description

Message cannot be sent with the current combination of “To” and/or “From” parameters.

Possible Causes

Number formatting: The format you used for the “To” or “From” number may not be formatted using the E.164 format. Venderflow standardises numbers using the E.164 format. If the “To” or “From” number of this message were altered by Venderflow in a way that you didn’t expect, try re-submitting the message with E.164 formatted addresses.

Destinations where Venderflow does not have connectivity: It is possible that Venderflow does not yet have service with the carrier you are trying to reach. Contact Support.

Sender ID restrictions in the destination country: Many countries limit which numbers, short-codes, and/or alphanumeric senders can be used in that region. Consult the SMS guidelines for the destination region.

Possible Solutions

Consult the linked documentation for each cause. You can also try sending again with a different “To” and “From” combination.