Requests for confirmation are valid only for half-duplex conversations. Requests for confirmation on full-duplex conversations result in a parameter check.

The choice of whether to send a confirmation request determines whether the deallocation request is conditional or unconditional.

When a confirmation request is sent, the conversation is not deallocated until a positive response is received. If the partner application program sends notification of an error in response to the confirmation request, the conversation is not deallocated.