How To Fix CMD_MLTAS055 - Vendor &1 is already assigned to business partner &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CMD_MLTAS - Messages for multiple assignment function

• Message number: 055

• Message text: Vendor &1 is already assigned to business partner &2

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMD_MLTAS055 - Vendor &1 is already assigned to business partner &2 ?

  The SAP error message CMD_MLTAS055 indicates that a vendor (identified as &1) is already assigned to a business partner (identified as &2). This error typically arises when there is an attempt to assign a vendor to a business partner that already has that vendor assigned.
  Cause:
  
  Duplicate Assignment: The primary cause of this error is that the vendor you are trying to assign is already linked to the specified business partner in the system.
  Data Entry Error: It may also occur due to incorrect data entry or an attempt to reassign a vendor that is already associated with another business partner.
  Configuration Issues: There might be configuration settings in the system that prevent the reassignment of vendors to business partners.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Use transaction codes like BP (Business Partner) or MK01 (Create Vendor) to check the existing assignments of the vendor to the business partner.
  Verify if the vendor is already assigned to the business partner you are trying to work with.
  
  
  
  Remove Existing Assignment:
  
  If you need to reassign the vendor to a different business partner, you may need to first remove the existing assignment. This can typically be done through the business partner maintenance transaction (BP).
  Navigate to the business partner and remove the vendor assignment if it is no longer needed.
  
  
  
  Use Correct Vendor:
  
  Ensure that you are using the correct vendor number. If you are trying to create a new vendor, make sure that the vendor number you are using is not already in use.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to business partner and vendor management for additional guidance on handling assignments.
  
  
  
  Contact Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as BP for Business Partner maintenance, MK01 for creating a vendor, and MK02 for changing vendor data.
  Business Partner Roles: Understand the different roles that a business partner can have in SAP, as this can affect how vendors are assigned and managed.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be specific fixes or updates available.
  
  By following these steps, you should be able to resolve the CMD_MLTAS055 error and manage vendor assignments effectively in your SAP system.