How To Fix UMK026 - Partner name must begin with "/"

SAP Error Message - Details

• Message type: E = Error

• Message class: UMK - Measures

• Message number: 026

• Message text: Partner name must begin with "/"

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 UMK026 - Partner name must begin with "/" ?

  The SAP error message UMK026, which states "Partner name must begin with '/'," typically occurs in the context of partner profiles or master data in SAP systems, particularly when dealing with IDocs or EDI (Electronic Data Interchange) configurations. This error indicates that the partner name you are trying to use does not conform to the expected format.
  Cause:
  
  Incorrect Partner Name Format: The partner name must start with a forward slash ("/"). This is a requirement in certain configurations, especially when defining logical systems or partner profiles in SAP.
  Data Entry Error: The partner name may have been entered incorrectly, missing the leading slash.
  Configuration Issues: There may be issues in the configuration of the partner profiles or logical systems that are causing the system to expect a specific format.
  
  Solution:
  
  Check Partner Name: Ensure that the partner name you are entering starts with a forward slash ("/"). For example, if the partner name is supposed to be "XYZ", it should be entered as "/XYZ".
  Review Partner Profiles: Go to the transaction code WE20 (for partner profiles) and verify that the partner names are correctly configured with the leading slash.
  Correct Data Entry: If you are entering the partner name manually, double-check for typos or omissions.
  Consult Documentation: If you are unsure about the correct format for partner names in your specific SAP configuration, refer to the relevant SAP documentation or consult with your SAP Basis or functional team.
  Testing: After making the necessary corrections, test the process again to ensure that the error is resolved.
  
  Related Information:
  
  Transaction Codes: 
  
  WE20: Partner Profiles
  WE21: Port Definition
  WE30: IDoc Types
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to partner profiles or IDoc configurations.
  SAP Community: Engage with the SAP Community forums for additional insights or similar issues faced by other users.
  
  By following these steps, you should be able to resolve the UMK026 error and ensure that your partner names are correctly formatted for SAP processing.