Diagnosis
You have specified a device/register for which the gas law deviationfactor is to be determined per device. The set gas law deviation factorcould not be determined for the period you have specified.

System Response

Procedure
Check that the set gas law deviation factor is maintained for yourdevice/register.
Enter the missing data and repeat the interrupted action.
If your data was complete, this indicates a system error. In this case,you should contact SAP.