How To Fix AP139 - You can no longer change the controlling area

SAP Error Message - Details

• Message type: E = Error

• Message class: AP - Investment program messages

• Message number: 139

• Message text: You can no longer change the controlling area

What causes this issue?

You tried to change the controlling area of an investment program
position, although there are already measures assigned to this
position.
Making this change is not possible. The program position and the
measures always have to belong to the same controlling area.

System Response

Changing the controlling area is not allowed.

How to fix this error?

If you want to change the controlling area, you first have to delete
all of the assignments of measures to the position.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AP139 - You can no longer change the controlling area ?

  The SAP error message AP139 ("You can no longer change the controlling area") typically occurs when you attempt to change the controlling area of a company code or a cost center that has already been assigned to a controlling area. This restriction is in place because changing the controlling area can have significant implications for financial reporting and data integrity.
  Cause:
  
  Data Integrity: Once a company code or cost center is assigned to a controlling area, it is locked to maintain data integrity. This prevents inconsistencies in financial reporting.
  Transaction History: If there are existing transactions or postings related to the controlling area, the system does not allow changes to avoid disrupting historical data.
  Configuration Settings: The system configuration may restrict changes to the controlling area after certain transactions have been executed.
  
  Solution:
  
  Review Current Assignments: Check the current assignments of the company code or cost center to confirm that it is indeed linked to a controlling area.
  Create a New Controlling Area: If you need to change the controlling area, consider creating a new controlling area and reassigning the relevant company codes or cost centers to it.
  Data Migration: If necessary, you may need to migrate data from the old controlling area to the new one. This can involve complex data handling and should be planned carefully.
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific procedures related to your version of SAP.
  Authorization Check: Ensure that you have the necessary authorizations to make changes to controlling area settings.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like OBY6 (for company code settings) and OKKP (for controlling area settings) to review and manage your configurations.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Testing in a Sandbox: If you are considering making significant changes, it is advisable to test the changes in a sandbox environment before applying them to the production system.
  
  If you continue to face issues or if the situation is complex, it may be beneficial to engage with an SAP consultant or your internal SAP support team for further assistance.