SAP Message AY429 - Errors or warnings on detail screen due to validation

Diagnosis
Validations (user-defined checks) were entered in Customizing for themaintenance of asset master data. The depreciation simulation data alsohas to satisfy these validation checks. However, when the checks werecarried out, the system issued warnings or error messages. The cause isin the depreciation areas on the detail screen.

Procedure
When you confirm this message by choosing 'Enter' you receive adetailed error list. Check the data using this list and make thenecessary corrections.