What are the problems in processing batch input sessions? How is batch input process different from processing online?

If batch-input session is terminated with errors, it appears in the list of INCORRECT session and it can be processed again. To correct session, first you can analyze the session. The analysis function allows to determine which screen and value produced error. If you find small errors in the data, you can correct them interactively, otherwise you need to modify batch input program, which are generated the session or many times even the data file.

While batch input is a two-step procedure, call transaction does both steps online one right after the other. In this method, you call a transaction from your program.