Host CP initiating deactivation of CP-CP session

Figure 1. Host CP initiating deactivation of CP-CP session

The CP sends a DEACT_CP_CP_SESSION to the SEND_REJECT_CONVGRP Transaction Program (TP). The CP sends this signal when it must have a particular CP-CP session with an adjacent node unbound.
The SEND_REJECT_CONVGRP TP issues an APPCCMD CONTROL=REJECT, QUALIFY=CONVGRP macroinstruction to deactivate the specified session.
APPC, responding to the APPCCMD CONTROL=REJECT,QUALIFY=CONVGRP macroinstruction, issues a CLSDST RELEASE macroinstruction to terminate the session.
APPC also builds and sends a CP_CP_SESSION_DEACT for the specified session to the CP. This signal is sent by APPC to notify the CP that a CP-CP session outage is detected. It contains the session type and CGID of the CP-CP session to which the outage is detected.
The CLSDST RELEASE causes SSCP to send an UNBIND for the particular session to the partner LU.
The CP sends a CP_STATUS(INACTIVE) signal for the specified session to the SSCP.
A response to the UNBIND is received by the SSCP from the partner LU.
Having received the UNBIND response, the SSCP posts complete the CLSDST RELEASE.
APPC posts the TP APPCCMD CONTROL=REJECT,QUALIFY=CONVGRP macroinstruction complete.