Diagnosis
The billing order of installation &v1& with the scheduled meter readingdate &v2 was simulated during the billing of primary installation &v3&.However, one of the following historical characteristics of installationV1 has changed in the billing period of the simulation document.

• Installation role


• Primary installation key


• Grouping type of the primary installation

These changes are not permitted.

System Response
Primary installation billing is cancelled.

Procedure
You have the following options:


• Change the historical characteristics of installation &v1&.


• Bill installation &v1& up to the date the changes were made.