CHECK
The CHECK runtime option is ignored for applications compiled with Enterprise COBOL V6.
If the compile time option SSRANGE is specified, range checks are generated by the compiler and checks are always executed at run time. The compiled-in range checks cannot be disabled.
Related references
CHECK (COBOL only) (z/OS® Language Environment® Programming Reference)
CHECK (COBOL only) (z/OS Language Environment Customization)
CHECK (COBOL only) (z/OS® Language Environment® Programming Reference)
CHECK (COBOL only) (z/OS Language Environment Customization)