How To Fix N2M027 - Changes to unit of measure no longer possible

SAP Error Message - Details

• Message type: E = Error

• Message class: N2M - Global Trade: Item Category Management

• Message number: 027

• Message text: Changes to unit of measure no longer possible

What causes this issue?

You changed the unit of measure for item &V1& in trading contract &V2&.

System Response

Associations already exist for item &V1&. As a result, a change to the
unit of measure is no longer permitted.

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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message N2M027 - Changes to unit of measure no longer possible ?

  The SAP error message N2M027, which states "Changes to unit of measure no longer possible," typically occurs in the context of materials management and inventory management within SAP. This error indicates that the unit of measure (UoM) for a material cannot be changed due to certain restrictions or conditions in the system.
  Causes:
  
  Material Status: The material may be in a status that does not allow changes, such as being locked for changes or being in a closed period.
  Transactions in Process: There may be ongoing transactions (like goods movements, sales orders, etc.) that are using the current unit of measure, preventing changes.
  Master Data Configuration: The material master data may have been configured in a way that restricts changes to the unit of measure after certain conditions are met.
  Dependencies: There may be dependencies on other master data or configuration settings that prevent the change.
  
  Solutions:
  
  Check Material Status: Verify the status of the material in the material master. If it is locked or in a closed period, you may need to unlock it or wait until the period is open.
  Review Open Transactions: Check for any open transactions that might be using the material. If there are ongoing transactions, you may need to complete or reverse them before making changes.
  Change UoM in a New Version: If the unit of measure needs to be changed, consider creating a new version of the material with the desired unit of measure.
  Consult with Configuration Team: If the issue persists, consult with your SAP configuration team to review the settings related to the material master and unit of measure.
  Use Transaction Codes: Use transaction codes like MM02 (Change Material) to check the material details and see if any fields are locked or restricted.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to error N2M027 for additional insights or patches.
  Documentation: Review SAP documentation on material master data management and unit of measure settings for best practices.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to make changes to the material master.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.