| Parameter | Reference | Type | Length | Default | Optional | Text |
|---|---|---|---|---|---|---|
| IM_CALLBACK_CLASS | CHAR30 | C | 30 | X | ||
| IM_CALLBACK_FORM | CHAR30 | C | 30 | SPACE | X | Form Routine |
| IM_CALLBACK_FUNCTION | CHAR30 | C | 30 | SPACE | X | Function Module |
| IM_CALLBACK_METHOD | CHAR30 | C | 30 | X | ||
| IM_CALLBACK_OBJECT | REF TO OBJECT | 0 | X | |||
| IM_CALLBACK_PROGRAM | SYST-REPID | C | 40 | SPACE | X | ABAP Program |