Hi Vadim,
Hope you are well!
I have used Javascript in Conversion file.
Converted TID data to X if TID value length is 3 and rest of records are rejected.
See below snapshot
Even i tried to add two lines instead of using JavaScript. This solution also converting to X if TID value length is three and rest it is loading as it is.
Output data
Could you please correct me if i am missing anything. thanks!
Vishu