How to perform an authorization trace (ST01) in Solution Manager Workcenters?

Solution Manager Workcenters are based on technology WebDynpro ABAP (usually interpreted by a web browser).
When performing an authorization trace in ST01 for a Workcenter application it is important to keep the following sequence:

Preparing the ST01 trace:

1. Verify the number of applications servers on SAP Solution Manager
   1. one application server
   2. several application servers

Performing ST01 trance:

1. Ensure that the end user (to be traced) has closed all web browser windows.
2. Switch on the ST01 trace with option authorization trace (you trace only a single user ID by using the filter function)
   1. on your application server
   2. on ALL application servers (you can switch the server using transaction SM51)
      
      
3. Tell the end user to call the Work Center application in the browser
4. The end user must logon now and navigate to the activity that you actually want to trace, but does not execute it yet
5. Meanwhile you check, which application server the user is working on
   1. If you have only one application server, you can skip this
   2. use transaction AL08 and verify the user context
6. Take a timestamp of the system, e.g. using System -> Status (time stamp before activity)
7. End user can NOW perform the corresponding function.
8. Take a timestamp of the system, e.g. using System -> Status (time stamp after activity)
9. Stop the ST01 trace
   1. on your application server
   2. on ALL application servers (you can switch the server using transaction SM51)
10. start Analysis (using transaction ST01) and use the time stamps that you have taken before.
    1. on your application server
    2. on the application server that you identified in step 5