How To Fix AJ794 - Bill. order of inst. &1 with sched. bill date &2 does not belong to instG

SAP Error Message - Details

• Message type: E = Error

• Message class: AJ - Billing program

• Message number: 794

• Message text: Bill. order of inst. &1 with sched. bill date &2 does not belong to instG

What causes this issue?

The billing order of installation &v1& with the scheduled meter reading
date &v2 was simulated during the billing of primary installation &v3&.
However, one of the following historical characteristics of installation
&v1& has changed in the billing period of the simulation document.
<DS:DE.INSTROLE>Installation role</>
<DS:DE.MAININST>Primary installation key</>
<DS:DE.INSTGRTYPE>Grouping type</> of the primary installation
These changes are not permitted.

System Response

Primary installation billing is cancelled.

How to fix this error?

You have the following options:
Change the historical characteristics of installation &v1&.
Bill installation &v1& up to the date the changes were made.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AJ794 - Bill. order of inst. &1 with sched. bill date &2 does not belong to instG ?

  The SAP error message AJ794 indicates that there is an issue with a billing order related to a specific installation group (instG). The message typically means that the billing order you are trying to process does not belong to the specified installation group, which can occur due to various reasons.
  
  Cause:
  
  Incorrect Installation Group Assignment: The billing order may have been assigned to a different installation group than the one you are trying to process it under.
  Data Entry Errors: There may have been a mistake in entering the billing order or installation group details.
  
  Configuration Issues: The system configuration may not be set up correctly to link the billing order with the appropriate installation group.
  Changes in Master Data: Changes in the master data related to the billing order or installation group may have led to inconsistencies.
  
  
  Solution:
  
  Verify Installation Group: Check the installation group assigned to the billing order and ensure it matches the one