SAP ASSERTION GLOSRY documentation, setup help and example usage

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Assertion
Assertion in an ABAP program . An assertion is defined by an ASSERT statement as a conditional checkpoint . Assertions are either always active or can be activated by assigning them to a checkpoint group . When the program reaches an active assertion, it evaluates the corresponding condition. If the condition is violated, the program terminates with a runtime error, accesses the ABAP Debugger , or creates a log entry. If the assertion is assigned to a checkpoint group , the program behavior is controlled by the corresponding activation settings, and otherwise, the program terminates.