Travel Expense Error in UWL of Manager

Hi,

We are using ECC 6.0, Portal 7.0 and the webdynpro versions of ESS and MSS. We are using the Travel expense and related workflows. When the employee creates a Travel request, an work item for the same is sent to the manager UWL as per the workflow. When we click open the workitem in UWL, it displays a blank screen.

No error is displayed. Can some one guide as to what is missing.

Regards

Jayesh