How To Fix KZ028 - Variance key reset to original value

KZ028 - Overview

• Message type: E = Error

• Message class: KZ - Cost Object Repetitive Mfg / Process Mfg

• Message number: 028

• Message text: Variance key reset to original value

What causes this issue?

All cost object IDs in a cost object hierarchy must have the
same variance key.
You entered a new variance key for this cost object ID, but
specified that the lower-level cost object IDs in the hierarchy
were not to be changed.

System Response

The system cancelled the new entry and reset the variance key to the
original value.

Error message extract from SAP system. Copyright SAP SE.

KZ028 - Details

• The SAP error message KZ028, which states "Variance key reset to original value," typically occurs in the context of controlling and cost accounting, particularly when dealing with variance calculations in SAP CO (Controlling) module. This message indicates that the variance key for a particular cost object (like a cost center or internal order) has been reset to its original value, which can happen for several reasons.
  Causes:
  
  Manual Changes: A user may have manually changed the variance key in the system, leading to the reset.
  
  Configuration Issues: Incorrect configuration in the controlling settings or master data can lead to this error.
  Data Consistency: If there are inconsistencies in the data or if the system detects that the variance key does not match the expected value, it may reset it.
  Posting Errors: Errors during posting or during the execution of a transaction can also trigger this message.
  Period Closing: If the period is closed and there are