Diagnosis
By clicking on a reference item, you have tried to view the part of theworkflow that is running or ran in a remote SAP system.
The local system therefore tries to set up a link to the remote system.
The attempt to set up this communications link was unsuccessful.

System Response
The system cannot display the part of the workflow that runs in theremote system.
INCLUDE NA_WF-ADMINISTRATOR OBJECT DOKU ID TX

Procedure for System Administration
The cause for the failure to set up communication (RFC to remote system)may be that there is no valid destination for logging on in the remotesystem.
Please check this destination.
The availability of the remote system is another prerequisite forsetting up communication successfully.