How To Fix W0022 - A reference plant already exists for stores

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 022

• Message text: A reference plant already exists for stores

What causes this issue?

You wish to maintain a reference plant for your stores.

System Response

Another plant has already been maintained for
stores in this distribution chain.

How to fix this error?

You cannot maintain another reference plant globally.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W0022 - A reference plant already exists for stores ?

  SAP Error Message:
  
  W0022 - A reference plant already exists for stores
  
  Cause:
  This warning message occurs when you try to assign or create a reference plant for a storage location, but the system detects that a reference plant has already been assigned to that storage location. In SAP, a storage location can only have one reference plant assigned to it. The reference plant is used in inventory management and procurement processes to link the storage location to a specific plant for valuation and stock management purposes.
  
  Explanation:
  
  Reference Plant: A plant that is linked to a storage location for valuation and stock management.
  Storage Location: A subdivision of a plant where inventory is physically stored.
  When you try to assign a reference plant to a storage location that already has one, SAP raises this warning to prevent duplicate or conflicting assignments.
  
  
  Solution:
  
  
  Check Existing Reference Plant:
  
  Use transaction OMIR (Assign Reference Plant to Storage Location) or navigate via IMG:
  
  Logistics ? Materials Management ? Inventory Management and Physical Inventory ? Storage Location ? Assign Reference Plant to Storage Location.
  
  
  Enter the plant and storage location to see the currently assigned reference plant.
  
  
  
  If You Need to Change the Reference Plant:
  
  You must first remove or change the existing reference plant assignment before assigning a new one.
  Note that changing the reference plant can have implications on inventory valuation and stock management, so proceed carefully.
  
  
  
  If the Assignment is Correct:
  
  If the reference plant is already correctly assigned, no further action is needed.
  The warning can be ignored if you are just trying to reassign the same reference plant.
  
  
  
  Check for Customizing or Master Data Issues:
  
  Sometimes, this warning appears due to inconsistent master data or incorrect customizing.
  Verify that the storage location and plant assignments are consistent across the system.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  OMIR – Assign Reference Plant to Storage Location
  MM01/MM02 – Material Master (to check plant/storage location data)
  SPRO – IMG path for customizing storage location and plant assignments
  
  
  
  IMG Path:
  
  Logistics ? Materials Management ? Inventory Management and Physical Inventory ? Storage Location ? Assign Reference Plant to Storage Location
  
  
  
  Impact:
  
  Reference plant assignment affects stock valuation, procurement, and inventory management.
  Incorrect assignments can lead to errors in stock postings and valuation.
  
  
  
  SAP Notes:
  
  Check SAP Notes related to storage location and reference plant assignments if the issue persists.
  
  
  
  
  Summary:
  
  Cause: Attempt to assign a reference plant to a storage location that already has one.
  Solution: Verify existing assignment via OMIR, remove or change if necessary, or ignore if assignment is correct.
  Related Info: Reference plant assignment is critical for inventory valuation and must be unique per storage location.
  
  
  If you need detailed steps or screenshots for the transaction OMIR or customizing, please let me know!