Explanation of OTMA user data fields
The following information provides additional detail on the content of the user-data section of the message prefix.
- Length
- Specifies the length of the user-data section of the message prefix, including the length field. The maximum length of the user data is 1024 bytes.
- User Data
- Specifies the optional user data. This data is managed by the client, and can be created and updated using the DFSYDRU0 exit routine. The server returns this section unchanged to the client as the first segment of any output messages.
- Reroute Tpipe
- Specifies the reroute tpipe name for an input transaction submitted
from an OTMA hold queue capable client, such as IMS Connect. This optional field starts at the
offset X'5C' from the beginning of user data prefix and is used in
the following two scenarios:
- When OTMA cannot deliver a CM0 IOPCB output message to the client, OTMA uses the reroute tpipe name, if specified, to reroute the output.
- When a send-only input transaction specifies the reroute tpipe name, any IOPCB output message which is the result of the Send-Only transaction will be queued to the reroute tpipe.