The KILL ICE command fails for a member on the ICE Chain in the 3270 environment and produces the OC3432 message

If you have Interval Control Elements, (ICE) that are in a WAIT state and were issued by a transaction that waits for the ICE to expire before continuing processing and you killed the ICE, it would leave the transaction waiting indefinitely for the ICE process to complete.

Clean up would be difficult because you would be required to trace back and backout anything previously touched by the initial transaction. This would be a costly process and vulnerable to errors. A better way to get rid of such an ICE issue would be to cancel the transaction that caused the creation of the ICE initially, therefore reducing the expiration time for the ICE.