Diagnosis
Either one or both screen numbers for the Enhanced Material Searchfunction have not been properly assigned.

Procedure
Assign screen numbers in Customizing for Materials Management bychoosing General Settings for Materials Management -> EnhancedMaterial Search -> Configure and Activate Enhanced Material Search withCreation.
Each application should have two screen numbers assigned. The screensare used in the search user interface and generated dynamicallyaccording to your Customizing settings. The screen numbers must bespecific for the selected application across all system clients.