SAP Message AA284 - Maint. of manual insurance value not possible in this maint. year

Diagnosis
The maintenance indicator for manual insurance values requires entry ofthe manual maintenance year.
If you only set the manual maintenance year, the base insurable valuewill be determined from the manual insurance value entered for currentmarket value insurance. The base value is then updated by the system atfiscal year closing.
You can generate a manual insurance value by setting the manualinsurance value indicator. This manual insurance value remains Systemunchanged by the system.

System Response
You have to enter the manual maintenance year.

Procedure
Correct