How To Fix W-104 - supplier already assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: W- -

• Message number: 104

• Message text: supplier already assigned

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W-104 - supplier already assigned ?

  Certainly! Here's detailed information about the SAP error message W-104: Supplier already assigned:
  
  Error Message
  W-104: Supplier already assigned
  
  Cause
  This warning message typically occurs in SAP when you try to assign a supplier (vendor) to a purchasing info record, source list, or another master data object, but the supplier is already assigned to that object or a related one. Essentially, the system detects a duplicate assignment attempt.
  Common scenarios include:
  
  Attempting to assign a vendor to a purchasing info record where the vendor is already assigned.
  Trying to assign a vendor to a source list entry that already has that vendor assigned.
  Duplicate vendor assignment in conditions or contracts.
  
  
  Explanation
  SAP enforces unique assignments to avoid data inconsistencies and redundancy. When you try to assign a supplier that is already linked, the system issues this warning to prevent duplicate entries.
  
  Solution / How to Resolve
  
  
  Check Existing Assignments:
  
  Review the purchasing info record, source list, or master data object to confirm if the supplier is already assigned.
  Use transaction codes like:
  
  ME11 / ME12 / ME13 for purchasing info records.
  ME01 / ME02 / ME03 for source lists.
  Vendor master data via XK03 or MK03.
  
  
  
  
  
  Avoid Duplicate Assignment:
  
  If the supplier is already assigned, no further action is needed unless you want to update or change the existing assignment.
  If you intended to assign a different supplier, verify the supplier number and correct it.
  
  
  
  Delete or Modify Existing Assignment (if necessary):
  
  If the existing assignment is incorrect or obsolete, consider deleting or modifying it before creating a new one.
  
  
  
  Check for Data Consistency:
  
  Sometimes, inconsistencies or data corruption can cause this warning. Running data consistency checks or consulting with your SAP Basis/Support team may help.
  
  
  
  Ignore Warning (if appropriate):
  
  Since this is a warning (W message), the system may allow you to proceed. However, proceed only if you are sure it won't cause data duplication.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  ME11: Create Purchasing Info Record
  ME12: Change Purchasing Info Record
  ME13: Display Purchasing Info Record
  ME01: Create Source List
  ME02: Change Source List
  ME03: Display Source List
  XK03 / MK03: Display Vendor Master Data
  
  
  
  SAP Notes / Documentation:
  
  Check SAP OSS Notes for any known issues related to W-104.
  Review SAP Help Portal for purchasing info record and source list management.
  
  
  
  Impact:
  
  Prevents duplicate supplier assignments which can cause procurement process errors.
  Helps maintain clean and consistent master data.
  
  
  
  
  If you provide the exact transaction or context where the error occurs, I can give more tailored advice.