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Return Codes, System Variables, and User Variables

Following each execution of the &PPI verb, the &RETCODE and &ZFDBK system variables are set to reflect the success or otherwise of the request. &RETCODE contains a normalized return code. &ZFDBK contains the PPI return code.

Note: For more information about the correlation between the &ZFDBK and &RETCODE system variables, see the &PPI verb description in the Network Control Language Reference Guide. A table shows the returned values of each of these system variables.

Other system variables are:

&ZPPI

Indicates whether this system appears to support PPI or not.

&ZPPINAME

Contains the PPI receiver ID that this NCL process is registered as.

Some &PPI functions set specific NCL user variables:

&PPISENDERID

Set to the PPI ID of the sender of a received message.

&PPIDATALEN

Set to the actual received data length, in bytes.