Passing the parameter area

When you provide a recovery routine, you have the opportunity to identify to the system the parameter area you want passed to the recovery routine. Here are the ways to accomplish that:

ESTAE and ESTAEX routines
Use the PARAM parameter on the ESTAE or ESTAEX macro to specify the address of the parameter area you have constructed.
ESTAI routines
Use the ESTAI parameter on the ATTACHX macro to specify both the address of the recovery routine to get control, and the address of the parameter area you have constructed.
IEAARR routines
Use the ARRPARAMPTR parameter on the IEAARR macro to specify the 31-bit address of the parameter area you constructed, or use the ARRPARAMPTR64 parameter to specify the 64-bit address of the parameter area you constructed.