LSMW- Download error records to a file

Hi Experts,

I have a query regarding error handling in LSMW using Direct Input method.

I want to upload a file using Direct Input method in LSMW(for material master).

Once the upload is done, there may be some records which cannot be uploaded due to some errors.

I want to download such records in the same structure as the source structure was, to the presentation server.

I know i can validate in the conversion and mapping step, but i cannot find all the conditions when a upload will fail.

Can Somebody guide me in this regard?

Thanks and regards,

Ravi kanth Talagana