&NMID

Returns the 1- to 12-character ID of this system.

&NMID returns the 1- to 12-character ID as set by the SYSPARMS command ID= operand. If this value has not been set by the SYSPARMS command, the default of the primary VTAM ACBNAME is returned.

Example: &NMID

&IF &NMID EQ NMPROD &THEN +
  &GOTO .OK

Notes:

When multiple systems are running in the same network, on the same or different machines, each should have a unique NMID. This is not enforced but is good operational practice.

The NMID for each system should be meaningful so as to allow a functional use in an installation's operational procedures.

Note: For more information, see the NMDID JCL parameter an d the domain ID (DID) as specified on the NMDID initialization parameter. The DID must be unique for every connecting system; otherwise the systems limit certain functions across INMC links.