This explanation describes the FAB process flow and how it interfaces with ABAP and the SAP database.
...
Discussed here are the ‘Form Saving’ methods. For an explanation of the ‘Form Loading’ methods go to step 13.
10. Data Submission Processing methods are before and when the user hits Draft or Submit or Approve.
...
A common scenario in the PERFORM_ACTIONS_FOR_STATUS_CHG method is to have a case statement and
depending on the value of status and action variables, execute custom methods.
For example, if the Current Action is ‘APPROVE’ then the developer can branch-off and run a custom-built
method that updates the SAP database using a BAPI.
...
Upon successful execution of the Action, a success message can be sent back to the screen. The
The contents of that message can be defined in this method.
...