The error “value does not match the pattern AA” likely indicates that the value you’re inputting does not conform to an expected format or pattern, where “AA” could represent two uppercase alphabetic characters. This error could be occurring in various contexts, such as:
- Form validation: If you’re entering a code or text in a form, the system might require two uppercase letters (e.g., “AB”) but the input you provided doesn’t meet that requirement.
- Programming or data validation: In coding or a database, there might be a regex (regular expression) rule enforcing a pattern that expects two uppercase letters. If your input doesn’t match, the error will occur.
For example, if the expected pattern is “AA” (which signifies two uppercase letters), entering “ab” or “123” would trigger such an error.