How To Fix N2M123 - Make association once only for same item

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 123

• Message text: Make association once only for same item

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message N2M123 - Make association once only for same item ?

  The SAP error message N2M123 ("Make association once only for same item") typically occurs in the context of the SAP Materials Management (MM) module, particularly when dealing with the association of materials or items in a specific process, such as in the creation of purchase orders, material master records, or during the configuration of certain master data.
  Cause:
  The error message indicates that there is an attempt to associate the same item multiple times in a context where only a single association is allowed. This could happen due to:
  
  Duplicate Entries: The system is detecting that the same item is being linked or associated more than once in a transaction or configuration.
  Incorrect Configuration: There may be a configuration issue in the system that allows for multiple associations when only one is permitted.
  Data Integrity Issues: There could be issues with the data integrity in the database, leading to unexpected behavior.
  
  Solution:
  To resolve the N2M123 error, you can take the following steps:
  
  
  Check for Duplicates: Review the transaction or configuration where the error occurred. Ensure that the item in question is not being associated multiple times. If it is, remove the duplicate association.
  
  
  Review Configuration Settings: If you have access to the configuration settings, check the relevant settings in the SAP system to ensure that they are set up correctly. This may involve looking at the customizing settings for the specific module you are working with.
  
  
  Data Validation: Validate the data being entered to ensure that it adheres to the expected format and does not contain duplicates. This may involve checking the material master records or other related data.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the transaction or process you are working with. This can provide insights into the expected behavior and any constraints.
  
  
  Contact Support: If the issue persists and you are unable to resolve it, consider reaching out to your SAP support team or consulting with SAP support for further assistance. They may have additional tools or insights to help diagnose the issue.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to the process you are working on (e.g., ME21N for purchase orders, MM01 for material master creation).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the N2M123 error and implement a solution to resolve it.