# Component Summary

The section lists the components that are used for this sample.

- `SXIRIJSL` or `SXIRIRSL`: the JCL member that submits the request initiator
- `SXR3ISL1` or `SXJ3ISL1`: the IVP Sender Listener that sends the request message
- `SXICITO2`: the IMS transaction identification
- `SXICIPO2`: the IMS COBOL message processing program
- `TRIGGER-FLDS`: the Substation ES trigger identification.

A version of this program, `SXICIPO3`, demonstrates the use of variable-length IMS transaction codes (not using the first 8 bytes of the message).

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