Static calls to alternate entry points work without restriction.
Dynamic calls to alternate entry points require the following elements:
You can specify another entry point at which a program will begin running by using the ENTRY label in the called program. However, this method is not recommended in a structured program.
Examples: static and dynamic CALL statements
related references
NAME
CANCEL statement (Enterprise COBOL Language Reference)
ENTRY statement (Enterprise COBOL Language Reference)
MVS Program Management: User's Guide and Reference