Server error when requesting parameter info of Webi document

Hi,

We're writing an application on our BI4.1 SP02 environment in Java using the RESTful SDK and we're assumingly running into a security issue.

Using a user which is member of the administrators group, we can get all information. If on the other hand we use a user with limited rights, we get a 500 internal server error when we request the parameter information for a Webi document. Requesting the dataprovider information succeeds, but not the parameters or other detailed report information.

Can someone tell us on what and which rights the user needs to be able to get this document information?

We already tried giving full access on the documents and on the Webi application without success, please help us out or point to a group that might be able to help.

Regards

Guy