# 21760: Advanced Opt-Out Keywords Invalid

Log Type: APPLICATION

Log Level: ERROR

## Description

The campaign submission could not be processed because the opt-out and help keywords for the provided messaging service's advanced opt-out configuration contain invalid characters. Please verify that all keywords have alphanumeric and unaccented characters only.

### Possible causes

Keywords include special characters or are not alphanumeric.

### Possible solutions

Use only unaccented alphanumeric characters for keywords.