When an application program that sends a request specifies the type of response it wants to receive, it either sets the RESPOND fields of the RPL before issuing the macroinstruction or specifies parameters in the RESPOND operand of the macroinstruction when the macroinstruction is issued. Three potential parameters can be specified in the RESPOND field or operand for each request:

• Nature of response desired for the request:

  NEX

  Positive or negative response

  EX

  Negative response only.

• Type of response desired for the request:

  FME

  Response type 1

  RRN

  Response type 2

  FME, RRN

  Both response types 1 and 2.

• Handling of a normal-flow response desired for the request when PROC=ORDRESP was set in the NIB:

  NQRESP

  Regular handling

  QRESP

  Handling as though the response is a normal-flow request from the LU.

Thus, an example of a RESPOND operand in which all three parameters are specified is:

RESPOND=(NEX,FME,NQRESP)