How To Fix WZ334 - Inbound distribution already entered

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 334

• Message text: Inbound distribution already entered

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZ334 - Inbound distribution already entered ?

  SAP Error Message:
  
  WZ334 - Inbound distribution already entered
  
  Cause:
  This error occurs when you try to enter or post an inbound distribution document (such as a goods receipt or inbound delivery) that has already been recorded in the system. Essentially, the system detects a duplicate inbound distribution for the same reference document or delivery, preventing double posting.
  
  Explanation:
  
  Inbound distribution documents are used in scenarios like stock transfers, subcontracting, or intercompany stock movements.
  When an inbound delivery or goods receipt is posted, SAP creates an inbound distribution document.
  If you attempt to post the same inbound distribution again (for example, by reprocessing the same delivery or document), SAP throws the WZ334 error to avoid duplication.
  
  
  Solution:
  
  
  Check if the inbound distribution has already been posted:
  
  Use transaction codes like MB51 (Material Document List) or VL33N (Display Inbound Delivery) to verify if the inbound delivery or goods receipt has already been processed.
  Check the material document or inbound delivery status.
  
  
  
  Avoid duplicate posting:
  
  If the inbound distribution is already posted, do not post it again.
  If you need to correct or reverse the posting, use the appropriate reversal transaction (e.g., MBST for material document cancellation).
  
  
  
  If the system incorrectly flags a duplicate:
  
  Check for inconsistencies or errors in the document flow.
  Verify if the inbound delivery or document was partially posted or if there are open items.
  Consult with your SAP MM/WM consultant to analyze the document flow and correct any inconsistencies.
  
  
  
  Technical checks:
  
  Sometimes, custom enhancements or user exits might cause duplicate postings. Review any custom code related to inbound distribution processing.
  Check for any batch jobs or interfaces that might be posting the same document multiple times.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  VL31N - Create Inbound Delivery
  VL32N - Change Inbound Delivery
  VL33N - Display Inbound Delivery
  MB51 - Material Document List
  MBST - Cancel Material Document
  
  
  
  Modules involved:
  
  MM (Materials Management)
  WM (Warehouse Management)
  SD (Sales and Distribution) if intercompany deliveries are involved
  
  
  
  Notes and SAP Help:
  
  Check SAP Notes related to inbound delivery and distribution errors.
  Review SAP Help documentation on inbound deliveries and goods receipt processing.
  
  
  
  
  Summary:
  WZ334 indicates an attempt to post an inbound distribution that already exists in the system. The solution is to verify the existing postings and avoid duplicate entries. If corrections are needed, use reversal transactions or consult SAP support for document flow inconsistencies.