Establishing the Exit that Invokes IKJCAF

You must include the CLSTATTN operand on the STAX macro that establishes the caller's attention exit. When an attention interruption occurs, control passes to the last attention routine established with the CLSTATTN=YES operand.

You must also include the IGNORE=YES operand on the STAX macro that establishes the caller's attention routine. The IGNORE=YES operand indicates that attention interruptions are to be ignored while the routine is processing a CLIST's attention routine. If attention interruptions are not ignored, an abend can result.

See The STAX macro instruction for restrictions governing the use of the CLSTATTN and IGNORE operands.