How To Fix WG137 - Material &1 already exists in document &3!

SAP Error Message - Details

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 137

• Message text: Material &1 already exists in document &3!

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WG137 - Material &1 already exists in document &3! ?

  Certainly! Here's a detailed explanation for the SAP error message WG137: "Material &1 already exists in document &3":
  
  Error Message
  WG137: Material &1 already exists in document &3
  
  &1 = Material number
  &3 = Document number (e.g., delivery document, sales order, etc.)
  
  
  Cause
  This error occurs when you try to add a material line item to a document (such as a delivery, sales order, or goods movement) where the same material already exists as a line item. SAP does not allow duplicate entries of the same material in the same document under certain conditions, depending on the business process or configuration.
  For example:
  
  In a delivery document, you try to add the same material twice as separate line items.
  In a sales order, the system prevents duplicate material entries if the configuration or process requires consolidation.
  
  
  When does this typically happen?
  
  During creation or modification of delivery documents (VL01N, VL02N).
  During sales order processing (VA01, VA02) if the system or user tries to add the same material twice.
  During goods movement or transfer postings where the system expects unique material entries.
  When the system is configured to prevent duplicate line items for materials in a document.
  
  
  Solution
  
  
  Check existing line items:
  
  Review the document &3 (e.g., delivery or sales order) to see if the material &1 is already listed.
  Instead of adding a new line for the same material, update the quantity of the existing line item.
  
  
  
  Consolidate line items:
  
  If you need to add more quantity of the same material, increase the quantity in the existing line rather than creating a new line.
  
  
  
  Check business process requirements:
  
  Some processes or customizations require unique material entries per document.
  If your business process requires multiple lines for the same material (e.g., different batch numbers, different storage locations), ensure that the distinguishing fields are correctly maintained.
  
  
  
  Check configuration:
  
  In some cases, the system configuration or user exits/BADIs might enforce this restriction.
  Review any custom code or user exits that might be causing this validation.
  
  
  
  If duplicates are necessary:
  
  If your business scenario requires multiple lines for the same material (e.g., different batches, different item categories), check if the document type or item category settings allow this.
  Adjust configuration accordingly or consult with your SAP functional consultant.
  
  
  
  
  Additional Information
  
  This message is a standard SAP warning/error to maintain data consistency.
  The message is part of the Logistics Execution (LE) or Sales and Distribution (SD) module, depending on the document type.
  Sometimes, this message can be triggered by user exits or enhancements that enforce unique material lines.
  Always check the document flow and line item details before attempting to add duplicate materials.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Attempt to add a material line that already exists in the document.
  
  
  Effect
  SAP prevents duplicate material entries in the same document.
  
  
  Solution
  Update quantity in existing line or check configuration to allow duplicates if needed.
  
  
  Modules
  LE (Logistics Execution), SD (Sales and Distribution)
  
  
  
  
  If you provide the transaction or document type where this error occurs, I can give more specific guidance.