FIX: rsItemNotFound – Report Builder Report Fails with The item ‘ModeName.smdl’ cannot be found.

In a SharePoint integrated SQL Server Reporting Services environment, you find you can access a model, open Report Builder, drag an drop a few items. But when you attempt to actually run the report you’re told the model cannot be found. What? But you were just using it!

The error looks like:

To Fix:

In SQL Server Reporting Services Configuration, check the Unattended Execution Account.

Provide this account access to the SharePoint library hosting your Model.