CancelAcknowledgeRequisition is being deprecated as of OAGIS 9.0. CancelAcknowledgeRequisition will be made available for the next three releases. OAGi recommend using ProcessRequisition for all new development.

The purpose of the CancelAcknowledgeRequisition is to send demand for goods or services to another business application for consideration of buying or in some way obtaining the requested items.