The SLN keyword is not valid because keyword SLNO(*VAR) is not present in the file description.
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Cause . . . . . : The SLN keyword is specified on a File Description specification for an externally-described WORKSTN file, but the external description does not have at least one record format containing the SLNO(*VAR) keyword. The SLN keyword is ignored.
Recovery . . . : Include the SLNO(*VAR) keyword for at least one record format in the file, or drop the specification from the source member. Compile again.
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