How To Fix J3020 - Save not possible. Enter a value for legacy system of financial object

J3020 - Overview

• Message type: E = Error

• Message class: J3 - Dialog Messages for Data Pool Entry Transactions

• Message number: 020

• Message text: Save not possible. Enter a value for legacy system of financial object

What causes this issue?

You have transferred a financial object in which the legacy (or source)
system field (SHERKU) is not filled.

System Response

The system will not allow you to save the object.

How to fix this error?

Enter a legacy system.

Error message extract from SAP system. Copyright SAP SE.

J3020 - Details

• The SAP error message J3020, "Save not possible. Enter a value for legacy system of financial object," typically occurs in the context of financial object management, particularly when dealing with legacy data migration or integration with financial objects in SAP.
  
  Cause:
  This error usually arises when you are trying to save a financial object (like a cost center, internal order, or other financial entities) without providing a required field that specifies the legacy system from which the data is being migrated. The legacy system field is essential for SAP to understand the origin of the data and to ensure proper integration and consistency.
  
  Solution:
  To resolve this error, you should:
  
  
  Identify the Required Field: Check the specific financial object you are trying to save and identify the field that is prompting the error. This is usually labeled as "Legacy System" or something similar.
  
  
  Enter the Required Value: Go to the relevant screen where you are entering