E12013 — SMSTemplateFromNotAllowed
A template send selects its sender automatically; 'from' is not accepted.
- HTTP status: 422
- Type: validation_error
- Name: SMSTemplateFromNotAllowed
What to do
A template send selects its sender automatically. Remove 'from' and send again.
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