E12018 — SMSAlphaNotSupported
Alphanumeric senders are not available for the destination country.
- HTTP status: 422
- Type: validation_error
- Name: SMSAlphaNotSupported
What to do
Use a different sender type for this destination country; alphanumeric senders are not available there.
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