A field holding an external name must have the job CCSID or CCSID 65535.
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Cause . . . . . : When a field holds an external name for a CALL operation, or for the EXTFILE, EXTMBR, HANDLER, DTAARA, or EXTPGM keywords, the field must be in the job CCSID, or it must have CCSID 65535.
Recovery . . . : If the default CCSID for the module is the job CCSID or CCSID(*HEX), then remove the CCSID keyword from the definition of the field. Otherwise, add CCSID(*JOBRUN) or CCSID(*HEX) to the definition of the field. Compile again.