Hi,
If your Webi report is based on BEx query, see ADAPT01675233
Description
This problem is resolved on BI4.0 SP06 and above.
New Behavior
When you create a Web Intelligence document based on a BEx query with default values set in the BW backend, the following error can appear if at least one of the default values is no longer available in the list of available values retrieved from the server and the default values are presented as one single string (so individual values cannot be removed):
Query script generation failed. See your BusinessObjects administrator.
Hope this helps,
Jin-Chong