How To Fix WN063 - Supplying plant &1 is already defined for the period &2 to &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 063

• Message text: Supplying plant &1 is already defined for the period &2 to &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WN063 - Supplying plant &1 is already defined for the period &2 to &3 ?

  The SAP error message WN063 indicates that there is an issue with the supply plant definition for a specific period. This error typically arises in the context of material requirements planning (MRP) or when setting up supply chain parameters in SAP.
  Cause:
  The error message "Supplying plant &1 is already defined for the period &2 to &3" occurs when you attempt to define a supplying plant for a time period that overlaps with an existing definition. This means that the system has already recorded a supply plant for the specified time frame, and you cannot have two overlapping definitions for the same plant.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Definitions:
  
  Go to the relevant transaction (e.g., MD61, MD62, or similar) where you are trying to define the supplying plant.
  Review the existing entries for the supplying plant and the specified period to identify any overlaps.
  
  
  
  Adjust Time Periods:
  
  If you find that there is an overlap, you will need to either:
  
  Change the time period for the new entry you are trying to create so that it does not overlap with the existing one.
  Modify or delete the existing entry if it is no longer needed or if it can be adjusted.
  
  
  
  
  
  Use Transaction Codes:
  
  Use transaction codes like MD04 (Stock/Requirements List) or MD05 (Individual Display of MRP List) to analyze the supply and demand situation for the material in question.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to MRP and supply chain management for further insights on managing supply plant definitions.
  
  
  
  Check User Authorizations:
  
  Ensure that you have the necessary authorizations to make changes to the supply plant definitions.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD01 (MRP Run), MD02 (Single-item, Multi-level MRP), and MD03 (Single-item, Single-level MRP).
  Master Data: Ensure that the material master data and plant data are correctly maintained in the system.
  Configuration Settings: Review the configuration settings in SPRO related to MRP and supply chain management to ensure they are set up correctly.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.