MDX Query Failed to execute when universe created on MultiProvider Query

Question

Hi All,
I am running the WebI report created on the universe which is built on Query.
The data flow model in our system for this query is:
Data Store Object> Infoset-> multiProvider--->Query.
When I drag only on Dimension object in the Webi Report without any Prompts the report works fine.
But when I add any other Dimension or any Prompt in the WebI Query it gives me following error:
A database error occured. The database error text is: The MDX query SELECT  { [Measures].[4EGM09GXGU939C3RJH2G9DOQY] }  ON COLUMNS , NON EMPTY CROSSJOIN( [Z_WM_IS01___F1].[LEVEL01].MEMBERS, [Z_WM_IS01___F12].[LEVEL01].MEMBERS ) DIMENSION PROPERTIES [Z_WM_IS01___F12].[2Z_WM_IS01___F12], [Z_WM_IS01___F1].[2Z_WM_IS01___F1] ON ROWS FROM [ZWM_M02/Z_ZWM_M02_Q001]  failed to execute with the error Unknown error. (WIS 10901)
But if i create the Universe on Query which is built on DSO then WebI is working fine.
Is there any restrictions on using Query on multiprovider?
Or do I have to make any configuration at BO server?
How do I configure logging for WebI and Designer to check the Log records?
Do I have to change anything related to any MDX Parser in BO Server?
We are using folowing versions:
SAP BI 7.0 and BOXIR3.1
Request to pls help me to solve this problem.

Answer 1

Thanks Ravi for ur inputs.
The report is working fine now.
There was the problem with the Mandatory prompts defined in SAP BI  Query on which universe was developed.
U should have only those Prompts as mandatory in SAp BI Query which are Universe level prompt, if some mandatory prompts defined as Class level promts in universe then the MDX Query generated based on WEBI report will not Execute.