How To Fix N2M166 - The association quantity cannot be changed

N2M166 - Overview

• Message type: E = Error

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

• Message number: 166

• Message text: The association quantity cannot be changed

What causes this issue?

It is not possible to change the association quantity as you requested.
This is because the open quantity in current item &v1& &v2& &v3& has
the negative value &v4&.

System Response

The change cannot made in the system.

How to fix this error?

Correct your entry.

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.

N2M166 - Details

• The SAP error message N2M166, "The association quantity cannot be changed," typically occurs in the context of managing materials or inventory in SAP, particularly when dealing with material associations in the context of production or inventory management.
  
  Cause:
  This error usually arises due to one of the following reasons:
  
  Locked or Inconsistent Data: The data related to the material or the association might be locked or inconsistent, preventing changes.
  System Configuration: The system may be configured in such a way that certain associations are not allowed to be modified after they have been established.
  Business Logic: There may be business rules in place that restrict changes to the association quantity once it has been set, especially if it is linked to a production order or a specific inventory transaction.
  Status of the Document: The document or transaction you are trying to modify may be in a status that does not allow changes (e.g., completed, closed, or