How To Fix GP420 - Maintain the rates either in CO area currency or object currency

GP420 - Overview

• Message type: E = Error

• Message class: GP - FI-SL and CO planning

• Message number: 420

• Message text: Maintain the rates either in CO area currency or object currency

What causes this issue?

You can maintain the rates either manually in the company code currency
or in the object currency, but not both at the same time.

System Response

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

How to fix this error?

If you want to use the planning parameters in a controlling area without
foreign currencies (flag: "All currencies.. X" in the customizing of
the controlling area), or without cost centers with the currency
differing from the company code currency, select manual maintenance of
the rates in company code currency.
Only select manual maintenance of the rates in object currency if you
want to use the planning parameters with cost centers whose currency
differs from the company code currency.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GP420 - Maintain the rates either in CO area currency or object currency ?

  The SAP error message GP420, which states "Maintain the rates either in CO area currency or object currency," typically occurs in the context of controlling (CO) and profitability analysis (CO-PA) when there is an issue with the currency settings for cost rates or pricing.
  
  Cause:
  
  Currency Mismatch: The error usually arises when there is a mismatch between the currency in which the rates are maintained and the currency used in the controlling area or the object (e.g., cost center, internal order).
  Missing Rate Maintenance: The required rates (e.g., activity rates, overhead rates) may not be maintained in the appropriate currency.
  
  Configuration Issues: There may be configuration issues in the controlling area settings or in the master data of the objects involved.
  
  
  Solution:
  
  
  Check Currency Settings:
  
  Verify the currency settings for the controlling area and the specific object (cost center, internal order, etc.). Ensure that they are consistent.
  Go to the controlling area settings in transaction code OKKP and