Root Cause: File transfer fails in the initiation phase, while accessing the keystore dataset. As more transfers run on the same agent, a user switch may occur in a running transfer thread, right before the main agent thread tries to access the keystore.
Update to a fix version listed below or a newer version if available.
Fix Status: Released
Component(s): Agent MVS
Automation Engine 12.1.0 - Available
Automation Engine 12.0.2 - Available
Automation Engine 11.2.5 - Available
Use File Transfer (FT) option FT_THREAD_LEVEL_SECURITY=YES to allow each transfer to run under the FT login user context
This will prevent concurrent effective user switches in the Agent process.