How To Fix FMPP029 - Only one changeable version allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: FMPP - Planning processor

• Message number: 029

• Message text: Only one changeable version allowed

What causes this issue?

You are using a number of changeable elements (key figures) that are
defined for different versions. Changeable key figures are only
permitted in a layout if they use the same version.

System Response

This layout is not permitted.

How to fix this error?

Only use one version in all changeable columns. Either switch the key
figures with the different version to a display column, or use the same
version for all key figures.

Procedure for System Administrators

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message FMPP029 - Only one changeable version allowed ?

  The SAP error message FMPP029: "Only one changeable version allowed" typically occurs in the context of SAP's Flexible Planning or similar planning scenarios where multiple versions of a plan are being managed. This error indicates that the system is configured to allow only one version of a planning object to be changeable at a time.
  Cause:
  
  Multiple Changeable Versions: The error arises when there is an attempt to create or modify a second changeable version while one already exists. SAP restricts this to maintain data integrity and avoid conflicts.
  Configuration Settings: The system settings may be configured to allow only one active changeable version for a particular planning area or object.
  User Actions: A user may inadvertently try to create or change a version that is not allowed due to existing configurations.
  
  Solution:
  
  Check Existing Versions: Review the existing versions in the planning area to identify if there is already a changeable version. You can do this by navigating to the relevant planning transaction and checking the version management.
  Deactivate or Change the Existing Version: If you need to create a new changeable version, you may need to deactivate or change the status of the existing version. This can usually be done through the version management settings in the planning transaction.
  Consult Configuration Settings: If you are an administrator, check the configuration settings for the planning area to see if the restriction can be modified. This may involve adjusting settings in the customizing transaction (SPRO) related to planning versions.
  User Authorization: Ensure that you have the necessary authorizations to create or modify versions. Sometimes, restrictions can be due to user roles and permissions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MC62 (for version management) or /SAPAPO/MC68 (for planning area settings).
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that may provide additional context or solutions.
  Documentation: Review SAP documentation related to Flexible Planning and version management for best practices and guidelines on managing versions effectively.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.