MRO conversation flow

These topics introduce some of the MRO DTP commands.

Conversation initiation
The front-end transaction is responsible for acquiring a session, specifying the conversation characteristics and requesting the startup of the back-end transaction in the partner system.
Back-end transaction initiation
The back-end transaction is initiated either by an attach header received from the partner system or by a transaction identifier included in the incoming data, and is started with the session as its principal facility.
Transferring data on the conversation
These topics discuss how to pass data between the front-end and back-end transactions.
Safeguarding data integrity
If it is important to safeguard data integrity across connected transactions, you can use the synchronization commands.
Ending the conversation
To end a transaction, one transaction issues a request for termination and the other receives this request. When this has happened, the conversation is unusable and both transactions must issue a FREE command to release the session.
Checking the outcome of a DTP command
Checking the response from a DTP command can be separated into three stages.
Summary of commands for MRO conversations
The CICS application programming interface provides a set of commands for use in MRO conversations.

Parent topic: Writing programs for MRO conversations