How To Fix N2M028 - Changing the quantity is not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 028

• Message text: Changing the quantity is not allowed

What causes this issue?

You want to change the quantity of item &V1&.

System Response

Associations already exist for the item. Because of these associations,
the item must have a minimum quantity of &V2& &V4&. However, you only
assigned &V3& &V4& to the item.
You cannot change the quantity.

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 N2M028 - Changing the quantity is not allowed ?

  The SAP error message N2M028, which states "Changing the quantity is not allowed," typically occurs in the context of inventory management or material document processing. This error can arise in various scenarios, such as during goods movements, stock transfers, or when trying to adjust quantities in a material document.
  Causes:
  
  Document Status: The document you are trying to change may be in a status that does not allow modifications. For example, if the document is already posted or has been processed further, changes to the quantity may be restricted.
  Configuration Settings: Certain configuration settings in the SAP system may restrict changes to quantities after a specific point in the process.
  Document Type Restrictions: Some document types may have inherent restrictions on changing quantities once they are created.
  User Authorizations: The user may not have the necessary authorizations to make changes to the document or material quantities.
  Business Logic: There may be business rules or logic implemented in the system that prevent changes to quantities under certain conditions.
  
  Solutions:
  
  Check Document Status: Verify the status of the document you are trying to change. If it is already posted, you may need to reverse the document or create a new document to adjust the quantities.
  Review Configuration: Consult with your SAP configuration team to review the settings related to the document type and process you are working with. They may need to adjust settings to allow quantity changes.
  User Authorizations: Ensure that you have the necessary permissions to make changes. If not, contact your system administrator to request the appropriate authorizations.
  Use Alternative Transactions: If changing the quantity directly is not allowed, consider using alternative transactions such as creating a return or a new document to adjust the inventory.
  Consult Documentation: Review SAP documentation or help resources for specific guidance related to the error message and the context in which it occurs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MIGO (Goods Movement), MB1A (Goods Withdrawal), or MB1B (Transfer Posting) that may be involved in the process.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide insights into specific bugs or configuration recommendations.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to identify the cause of the N2M028 error and take appropriate action to resolve it.