Based on Project Director (PD) settings, your files may have a set maximum segment length. Any violation of a segment that exceeds the maximum characters allowed results in a change to the segment Max value in the progress bar from black to red. In the example, the target segment has 57 characters, when there is a limit of 56.
Users can monitor the progress bar for maximum segment length violations, and can also configure the Transcheck Report to flag such violations. Refer to Configure Transcheck.