---
page_type: error
code: 21616
message: "21616: The 'From' number matches multiple numbers for your account"
level: ERROR
---

## Error - 21616

### The 'From' number matches multiple numbers for your account

You have attempted to send a SMS with a 'From' number that matches more than one number belonging to your account. Please submit the 'From' number in E.164 format to resolve the ambiguity.