Diagnosis
The allocation month for billing is compared with a month interval.Only values from 1 to 12 are supported for the interval limits. Adifferent value was detected in this case.
This generally only applies to thermal gas billing 00.
The following cases are exceptions to this rule:

• You use thermal gas billing 01 and still want to retrieve the
calculated temperature values for use in calculating the gas lawdeviation factor.

• You use thermal gas billing 02 and still want to retrieve the
temperature and pressure (measured pressure, air pressure) to use incalculating the gas law deviation factor.