How To Fix M8104 - Number & already assigned

M8104 - Overview

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 104

• Message text: Number & already assigned

What causes this issue?

The intercompany number you entered already exists in the system.

How to fix this error?

Overwrite your input with a new number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8104 - Number & already assigned ?

  The SAP error message M8104 ("Number & already assigned") typically occurs in the context of material management or inventory management when you attempt to create or assign a number (such as a material number, document number, etc.) that has already been used or assigned in the system. This can happen in various scenarios, such as creating a new material, posting a goods movement, or entering a document.
  
  Cause:
  
  Duplicate Number Assignment: The number you are trying to assign is already in use for another material or document.
  Number Range Issues: The number range configuration may not be set up correctly, leading to conflicts in number assignments.
  Data Entry Errors: There may be a typographical error in the number you are trying to enter, leading to confusion with existing numbers.
  
  
  Solution:
  
  
  Check Existing Assignments: Verify if the number you are trying to use is already assigned to another material or document. You can do this by searching