The operation entry is not allowed in the main source section when NOMAIN is specified.
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Cause . . . . . : When the NOMAIN keyword is specified on the Control specification, only PLIST, PARM, KLIST, KFLD and DEFINE operations are allowed in the Calculation specifications of the main source section. The specification is ignored.
Recovery . . . : Remove the incorrect Calculation specification, or remove the NOMAIN keyword from the Control specification. Compile again.
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