SMP/E uses information stored in an OPCODE definition default set to differentiate macro invocations from assembler operation codes. If you wish to change the default set, the SMPPARM DD statement is required when SMP/E processes JCLIN with assembly steps.

Licensed programs or user products that use special assemblers recognizing additional operation codes must provide an OPCODE member identifying those codes, and the name of that OPCODE member must be specified in the OPCODE operand. For more information about defining OPCODE members for JCLIN processing, see the "SMP/E OPCODE Member Control Statements" topic in SMP/E for z/OS Reference.