How To Fix WX450 - Plant no. & exists already in T001W -> data copied

SAP Error Message - Details

• Message type: E = Error

• Message class: WX - Master data maintenance: Plant

• Message number: 450

• Message text: Plant no. & exists already in T001W -> data copied

Self-Explanatory Message

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• What is the cause and solution for SAP error message WX450 - Plant no. & exists already in T001W -> data copied ?

  The SAP error message:
  WX450: Plant no. & exists already in T001W -> data copied
  
  Meaning / Cause:
  This error occurs when you try to create or copy a plant in SAP, but the plant number you are trying to use already exists in the table T001W (which stores plant master data). Essentially, the system is preventing duplication of plant numbers because each plant must have a unique identifier.
  
  T001W is the table that holds plant master data.
  The plant number you are trying to create or copy is already present in this table.
  The message indicates that the data you are trying to copy cannot be created because the plant number is not unique.
  
  
  When does it occur?
  
  When creating a new plant via transaction OX10 or other plant maintenance transactions.
  When copying an existing plant to create a new one but using an existing plant number.
  During data migration or upload if the plant number already exists in the system.
  
  
  Solution:
  
  
  Check if the plant number already exists:
  
  Use transaction SE16N or SE11 to view table T001W.
  Enter the plant number you want to create and check if it already exists.
  
  
  
  Use a unique plant number:
  
  If the plant number exists, choose a different, unique plant number for the new plant.
  Ensure that the plant number you want to create is not already assigned.
  
  
  
  If copying data:
  
  When copying a plant, make sure to specify a new plant number that does not exist.
  The system copies the data but requires a unique key.
  
  
  
  Check for incomplete or inconsistent data:
  
  Sometimes, a plant number might exist but is incomplete or marked for deletion.
  Verify the status of the plant in T001W.
  
  
  
  If this is during a data migration:
  
  Clean up or adjust the source data to avoid duplicates.
  Coordinate with the migration team to ensure unique plant numbers.
  
  
  
  
  Additional Information:
  
  Plant (WERKS) is a key organizational unit in SAP Logistics.
  The plant number is a key field and must be unique across the system.
  Table T001W stores plant master data including plant number, name, address, and other details.
  The error message is a standard SAP message to prevent duplicate entries in master data tables.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error message
  WX450 Plant no. & exists already in T001W -> data copied
  
  
  Cause
  Plant number already exists in T001W (duplicate key)
  
  
  Solution
  Use a unique plant number; check T001W for existing plants; correct data before copying or creating
  
  
  Transaction
  OX10 (Create Plant), SE16N (View T001W), SE11 (Data Dictionary)
  
  
  
  
  If you need help identifying existing plants or generating new plant numbers, consult your SAP Basis or functional team responsible for organizational data setup.