Diagnosis
After the enhancement of a UIcomponent, the page of the view is automatically copied to thecustomer namespace. Therefore, after importing a Support Package orperforming an upgrade, the changes in the SAP standard view page of theUI component are not transferred to the enhanced view page.
The original SAP standard view page contains page attribute &V1&, whichis missing in a page of enhanced view.

Procedure
Check the page attribute and complete it manually. Otherwise, if aconfiguration based on the page attribute exists for a view, this viewcannot be loaded correctly at runtime or exceptions occur.