I just wanted to share with you about a problem which I’ve seen, which affects the UWL in scenarios involving workitems coming from a MdmUwlConnector.
In case the workitems are being properly retrieved and shown in the UWL but an “Unable to perform the request…” error message is thrown in the UWL IView when selecting one of the MDM workitems and clicking in a UWL action (Button in the preview area), then it can be the case that you’re facing the issue described in the following SAP Note:
#1913391: MdmIViewLauncher is not registered with UWL
Looking at the default trace messages (SAP Note 1596214) from after having received the error in the UWL, following is the exception found:
Connector with id MdmIViewLauncher is not registered with UWL
Interesting is that there isn’t any UWL connector whose ID is MdmIViewLauncher, but still this exception is written to the trace.
As per what I’ve mentioned above, this issue is described on SAP Note 1913391, and the fix has been provided within a patch for BP_MDM_APP.