A parameter is required for the EXTPGM keyword when the procedure name is longer than 10.
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Cause . . . . . : You must specify a parameter for the EXTPGM keyword when the name of the procedure is longer than 10 characters.
Recovery . . . : Reduce the name of the procedure so that it is no longer than 10 characters, or specify a parameter for the EXTPGM keyword. Compile again.