You can run one test case as follows:
The processing mode only affects the execution of transactions in the CATT function
The test case runs in dialog. You can correct field entries or influence the test by entering OK codes. Go to the next screen with
The transaction runs without dialog.
The transactions run without dialog until the first error or termination. They then switch to dialog. You can now change any incorrect entries. When you confirm your entries, the transaction continues without dialog until the next error.
If the chosen test procedure has
A log is produced at the end of the test procedure if you did not set the no log flag in the initial screen. The System displays the short log directly if no errors occurred. If errors occurred, a long log is displayed from the module in which the error occurred.

If you changed input values in processing modes " foreground" or "only display errors", they do not appear in the log.

You must confirm system messages of type ‘I’ with ENTER before you can continue. This also applies to messages that only appear in the status bar. Type I system messages are ignored in background processing mode.