Differences between APPC mapped and MRO conversations

When a SEND command is issued on an MRO session, CICS® does not defer sending the data, so control indicators cannot be added to the data after a SEND command has been issued.

The same command sequence may therefore require more flows on an MRO session than it does on an APPC session but, if the receiving transaction is correctly designed to be driven by the conversation state, the same effects are achieved.