You are in the screen Change Condition Table (Output Sales). The application selected has already been entered.
To create a new condition table with the fields which are relevant for message (output) determination, proceed as follows:
You are in the screen Create Condition Table (Output Sales): Field Overview.
The field is copied to the list of selected fields (left side). The field is shown in red in the field catalog.
After another prompt, correct generation is shown in the generation log.