E12056 — SMSSenderNotConfigured
This sender is not one of your configured SMS senders.
- HTTP status: 422
- Type: validation_error
- Name: SMSSenderNotConfigured
What to do
Add the sender under SMS senders before sending from it, then register it for any destination country that requires a registration. Sending from a sender you have not configured is no longer permitted.
Related
- E12xxx — SMS sending & delivery: every code in this range
- Errors: the full wire contract, status mapping, and error catalog
- Error handling: branching on type and code, validation details, and vendor_code