Hello Priyanka,
The WIS_30270 error can show up in several places, like in 'CreateDocument' or in 'answerPromptsEx' (if the report has parameters).
Please try these steps to resolve:
1. Log into the Business Objects CMC
2. Go to the 'Servers' area of the CMC
3. Double-click on the WebIntelligenceProcessingServer server to open the properties
4. Scroll down the page and uncheck the 'Enable Real-time Cache' checkbox
5. Click 'Save and Close'
6. Highlight the WebIntelligenceProcessingServer server which should now have a flag next to it
7. Right-click and select 'Restart server' for the change to take effect
8. Retest the document
Let me know how this goes.
Best Regards,
Gale Bacon
CA Technologies