6.4 IMS Client Requests
An IMS client transaction is one that issues a request for a service provided by a remote system. You must install the DFSYPRX0 and DFSYDRU0 IMS user exits prior to using an IMS client transaction with the OTMA client gateway. Refer to the IBM document, Open Transaction Manager Access Guide for additional information on these user exits. Basic samples of these exits are in the Sample JCL and User Exits