To assist you better, could you please provide more details and context regarding your inquiry? Specifically:
Could you share an example of the file name and how it's being altered during representation creation?
Which version of Windchill are you using, and is this happening consistently across all representations?
Are you using any custom publishing rules or configurations that might affect file naming?
Is this issue affecting downstream processes or integrations, such as visualization or file retrieval?
Does this behavior occur with specific file types or all types during representation creation?
Including screenshots can also be very helpful in understanding your process. This will enhance the likelihood of receiving valuable assistance from other Community members.
You might also find it useful to refer to the guide on how to ask a good question. Additionally, our community champion has shared tips on key points to include when asking a question on the PTC Community.