The requirement for an OTHERS clause is defensive programming. The clause should either take appropriate action, or contain a suitable
comment as to why no action is taken.
Noncompliant code example
CASE SY-INDEX. // Noncompliant; missing WHEN OTHERS clause
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.
CASE SY-INDEX.
WHEN OTHERS. // Compliant
WRITE 'Unexpected result'
WHEN ONE.
WRITE 'One'.
WHEN 2.
WRITE 'Two'.
ENDCASE.
