Calling Processing Blocks
In every processing block of an ABAP program, processing blocks of the same program can be called (using internal calls) or processing blocks of other ABAP programs can be called (using external calls) .
- Calling procedures directly.
- Event handlers can be called indirectly by raising events from the same class in methods. This provides the interface of the event handler. A prerequisite for the execution of an event handler is its registration.
- Event blocks can be called indirectly by raising events in the runtime environment explicitly.