Content must be at most {max} characters
Support validation returned support.contentMax when content exceeds {max}. Min sibling: Content must be at least {min} characters.
Why this happens
Maximum length for ticket/support content bodies. Message fields use Message must be at most {max} characters instead.
Diagnose and fix
1. Trim the content to {max} characters or fewer.
2. Split long text across replies if needed.
3. Retry submit.
4. See Tickets (member) / Contact form (member).