Hi Madhu,
Have you done your own customizing or do you use a SAP delivered factsheet? In general in customizing SPRO -> SAP Customizing Implementation Guide -> Customer Relationship Management -> UI Framework -> UI Framework Definition -> Fact Sheet -> Maintain Fact Sheet you have to maintain the window which is used. For this window views needs to be assigned in the runtime repository.
Check if there are views assigned to the window which has been specified in above customizing, for example for ICCMP_IBASE following view is assigned:
Best Regards,
Sigrid
