I have two questions related to conversion exists:
1. I am looking for a conversion exit that trims spaces from fields when loading data from a text file into the PSA. I am aware of L_TRIM and R_TRIM for transformations, but I would like to do it on the PSA level already.
2. Where/How can I write my own conversion exists for the PSA (like ALPHA)? I cannot find a "new" button anywhere on the DataSource Fields tab. If I have to do this directly in SE80, can someone point me to an ABAP template and explain the steps (how to create a conversion exit, where to store the program, method signatures etc)?
Thanks a lot,