The following error occurs when you try to view the data from another web application stored in a different configuration database :
“Unable to open the site “URL”. Error message: The Web application at URL could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.”
Title
Error: “Unable to open the site “URL”. Error message: The Web application at URL could not be fouDescription
Cause
This is a limitation of SharePoint Object Model
Resolution
The error message indicates that two web applications involved are in different configuration databases. Quest Web Parts for SharePoint can view the data (retrieved via URLs) from different web applications if only they are in the same configuration database.
WORKAROUND:
The workaround is to use System Integration (SI) Web Parts to view the data using web services. SharePoint contains built in web services which can be used to retrieve the data. For more details please refer to Quest Web Parts for SharePoint Computer Based Training chapters related to SI Web Parts configuration and usage.
Defect ID
This is a limitation of SharePoint Object Model