Jolt 1.2 Developer's Guide

In the Repository Editor add the ECHO service as follows:
Add a service named ECHO whose buffer type is CARRAY.1.
Define the input buffer type and output buffer type as CARRAY for the ECHO service.2.
Define the ECHO service with only one parameter named CARRAY that is both an input and output parameter.3.
Note that if you are using the X_OCTET buffer type, you must change the Input Buffer Type and Output Buffer Type fields to X_OCTET.