How To Fix M8_2111 - Unique assignment of the item using &1 &2 is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: M8_2 - Logistics Invoice Verification

• Message number: 111

• Message text: Unique assignment of the item using &1 &2 is not possible

What causes this issue?

The IDoc contains an item with reference to <(>&<)>1 <(>&<)>2 from a
transportation management system.
For <(>&<)>1 <(>&<)>2, a number of freight settlement documents were
transferred. A unique assignment of the EDI invoice item to a freight
settlement document is therefore not possible.

System Response

The invoice cannot be posted.

How to fix this error?

For technical reasons, one purchase order is created per freight
settlement document, which the system requires for invoice creation.
In the IDoc, include the number of the purchase order that was created
with reference to this freight settlement document as a selection
criterion in addition to <(>&<)>1 <(>&<)>2.

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 M8_2111 - Unique assignment of the item using &1 &2 is not possible ?

  The SAP error message M8_2111, which states "Unique assignment of the item using &1 &2 is not possible," typically occurs in the context of inventory management or material management when there is an attempt to assign a unique identifier to an item that is already associated with another identifier or when the system cannot uniquely identify the item based on the provided parameters.
  Causes:
  
  Duplicate Entries: The item you are trying to assign may already have an existing assignment with the same unique identifier.
  Incorrect Configuration: The configuration settings for the material or item may not allow for unique assignments based on the specified fields.
  Data Integrity Issues: There may be inconsistencies or errors in the master data that prevent the system from recognizing the item as unique.
  Missing or Incorrect Parameters: The parameters (&1 and &2) used for the assignment may not be correctly defined or may not correspond to the expected fields.
  
  Solutions:
  
  Check Existing Assignments: Review the existing assignments for the item in question to ensure that there are no duplicates. You can do this by checking the material master or relevant transaction codes.
  Review Configuration Settings: Ensure that the configuration settings for the material or item allow for unique assignments. This may involve checking the settings in the material master or related configuration tables.
  Data Cleanup: If there are data integrity issues, consider cleaning up the master data. This may involve correcting or removing duplicate entries.
  Correct Parameters: Verify that the parameters you are using for the assignment are correct and correspond to the expected fields. Ensure that you are using the right identifiers for the item.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the error message and its context.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like MM03 (Display Material), MM02 (Change Material), or MB1A (Goods Withdrawal) to investigate the material master and its assignments.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration and data.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.