E15019 — WhatsAppSenderNotFound
The from number is not a WhatsApp sender this workspace can send from.
- HTTP status: 422
- Type: validation_error
- Name: WhatsAppSenderNotFound
What to do
Use a business phone number registered to this workspace. Check the number is in E.164 format and that its WhatsApp registration completed.
Related
- E15xxx — WhatsApp 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