CASE can contain a WHEN OTHERS clause for various reasons: to handle unexpected values, to show that all the cases were
properly considered.
For readability purpose, to help a developer to quickly find the default behavior of a CASE statement, it is recommended to put the
WHEN OTHERS clause at the end of the CASE statement. This rule raises an issue if the WHEN OTHERS clause is not
the last one of the CASE's cases.
Noncompliant Code Example
CASE SY-INDEX.
WHEN OTHERS. // Noncompliant; WHEN OTHERS should be last statement
WRITE 'Unexpected result'
WHEN ONE.
WRITE 'One'.
WHEN 2.
WRITE 'Two'.
ENDCASE.
Compliant Solution
CASE SY-INDEX.
WHEN ONE.
WRITE 'One'.
WHEN 2.
WRITE 'Two'.
WHEN OTHERS. // Compliant
WRITE 'Unexpected result'
ENDCASE.
