The values specified for these keywords are presented to the client when it invokes IXCRECV to receive the response. The interpretation of these values is determined by the client/server application. Use the RESPRETCODE and RESPRSNCODE keywords to specify a return and reason code indicating the result of the processing of the request. If not specified, the values presented to the client will be zero.

The SUPPORTSLEVEL and SUPPLIEDLEVEL keywords are intended for use when responding to requests where the client might have specified the RESPONSELEVEL keyword when sending the request. The intended purpose of these keywords is to enable the client/server application to easily support a protocol that allows different levels of data to be returned by the server.

For example, a client could specify RESPONSELEVEL=0 to request summary information and RESPONSELEVEL=1 to request detailed information. When sending the response, the server can specify SUPPLIEDLEVEL to indicate the level of data that it provided in the response and SUPPORTSLEVEL to indicate the highest level of data that it could have provided.