Function Types
When you create functions, you define a function code and a name. When a user chooses a function, the system stores the function code in the SY-UCOMM field. The code tells the system which function a user has chosen.
You can also assign a type to your functions. Function types can, for example, tell the system when or how to carry out a function.
The system uses the following function types:
| Type | Description |
|---|---|
|
Normal function code processing (for example, in a PAI module). |
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|
E |
Triggers an "at exit-command" module in the Process After Input (PAI) processing block (MODULE <xxx> AT EXIT-COMMAND). When the user selects an E type function, the system enters the "at exit-command" module before carrying out any input checks. |
|
T |
Calls another transaction. Activating a T type function has the same effect as the LEAVE TO TRANSACTION statement. The user cannot return to the original transaction. |
|
S |
Triggers system functions used internally in SAP standard applications. You must not use type S when creating your own functions. |
|
P |
Triggers a function defined locally at the GUI. This function is not passed back to the ABAP program (no SY-UCOMM or OK_CODE). Instead, it is processed at the presentation server. This type of function can only currently be used for tabstrip controls (Screen Painter). |