JCL EXEC statement

The statements starts with //. The operational filed contains EXEC. The name is called as step name. Step name is optional.

Positional parameters : PGM=program name or utility name
OR
PROC=procedure name
Example :
//STEP1 EXEC PGM=SAMPLE
//STEP2 EXEC PROC=PROC1

Note: We should give PROGRAM-ID name of the COBOL program in the EXEC statement.
Under one job statement we can have maximum of 255 step including the steps in the procedures. i.e. we can have maximum of 255 EXEC statements.