How To Fix KM121 - Field & must always be time-dependent

KM121 - Overview

• Message type: E = Error

• Message class: KM - Error messages for Profit Center Accounting

• Message number: 121

• Message text: Field & must always be time-dependent

What causes this issue?

You tried to change the "time-based" setting of a field which must
always time-based.

System Response

This field remains time-based.

How to fix this error?

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.

KM121 - Details

• The SAP error message KM121 ("Field & must always be time-dependent") typically occurs in the context of SAP Controlling (CO) or SAP Project System (PS) when you are trying to enter or modify data that requires a time-dependent characteristic, but the system does not have the necessary time-dependent data.
  
  Cause:
  
  Missing Time-Dependent Data: The field in question is expected to have time-dependent values, but the required data for the specified time period is either missing or not properly maintained.
  Incorrect Configuration: The configuration of the master data or the settings in the controlling area or project may not be set up to handle time-dependent characteristics.
  Data Entry Error: The user may be trying to enter a value that is not valid for the specified time frame.
  
  
  Solution:
  
  
  Check Master Data: Ensure that the master data for the object you are working with (e.g., cost center, internal order, project) is correctly maintained with time-dependent values. You can