The parameter list that XCF passes to the status user routine is mapped by the IXCYSEPL mapping macro and pointed to by GPR 1. The parameter list is addressable from the primary address space in which the status user routine runs, and includes the following information:

• Member data value provided by the IXCJOIN macro (MEMDATA parameter).
• Address of the member's status field.
• Whether XCF was checking for status update missing or status update resumed.
• The member's token.