Message SAP /BEV2/EDMESS1036 - Overlap in validity period (corresponding key not yet stored?)

Diagnosis
A record with identical key values (Plant/Storage location/Excise dutyfunction) and different validity area is available, time overlaps werefound (for example due to a blank field in date to = unlimitedvalidity).

Procedure
The table entry with identical key values has to be adjusted regardingthe validity area AND saved, as the system recognizes the change onlyafter this procedure.