Identify key parameters

This describes how to identify key parameters that uniquely identify the object.

The number of key parameters should be limited to the number of parameters needed to uniquely define the object to be changed.

To ensure a key parameter is coded correctly in the command definition source, do the following:

Specify KEYPARM(*YES) on the PARM statement in the command definition source.
Define all parameters that specify KEYPARM(*YES) before all parameters that specify KEYPARM(*NO).
Note: If a PARM statement specifies KEYPARM(*YES) after a PARM statement that specifies KEYPARM(*NO), the parameter is not treated as a key parameter and a warning message is issued.
Do not specify a MAX value greater than one in the PARM statement.
Do not specify a MAX value greater than one for ELEM statements associated with key parameters.
Do not specify *PMTRQS or a prompt control statement for the PMTCTL keyword on the PARM statement.
Place key parameters in the command definition source in the same order you want them to appear when prompted.