How To Fix VN081 - No demand source was found for event &, object type & (ID &)

SAP Error Message - Details

• Message type: E = Error

• Message class: VN - Nachrichtensteuerung

• Message number: 081

• Message text: No demand source was found for event &, object type & (ID &)

Self-Explanatory Message

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• What is the cause and solution for SAP error message VN081 - No demand source was found for event &, object type & (ID &) ?

  The SAP error message:
  VN081 No demand source was found for event &, object type & (ID &)
  typically occurs in the context of Vendor Consignment or Vendor Managed Inventory (VMI) processes, particularly when the system tries to create or process a demand event but cannot find a corresponding demand source.
  
  Explanation of the Message Components
  
  Event &: The specific event code or type that triggered the error.
  Object type &: The type of object involved (e.g., material, purchase order, etc.).
  ID &: The identifier of the object (e.g., material number, document number).
  
  
  Cause
  This error usually arises because:
  
  No Demand Source Defined: The system expects a demand source (such as a purchase order, reservation, or forecast) linked to the event, but none exists.
  Incorrect or Missing Customizing: The configuration for demand source determination is incomplete or incorrect.
  Master Data Issues: The material master or vendor master data might be missing or incorrectly maintained for consignment or VMI processes.
  Event Processing Sequence: The event is triggered before the demand source is created or updated.
  Integration Issues: Problems in integration between modules (e.g., between MM and SD or between SAP and external systems) causing missing demand source data.
  
  
  Solution
  To resolve the VN081 error, consider the following steps:
  
  
  Check Demand Source Configuration:
  
  Verify the customizing settings for demand source determination in transaction SPRO under:
  
  Logistics Execution ? Vendor Consignment ? Demand Source Determination
  Or relevant VMI customizing paths.
  
  
  Ensure that the event type and object type are correctly mapped to a demand source.
  
  
  
  Verify Master Data:
  
  Check the material master (MM03) for correct settings related to consignment or VMI.
  Check vendor master data for correct partner roles and consignment/VMI settings.
  
  
  
  Check Event and Demand Source Linkage:
  
  Use transaction codes like MB51, MB5B, or relevant VMI monitoring transactions to check if the demand source exists for the event.
  Confirm that the demand source document (e.g., purchase order, forecast) is created and active.
  
  
  
  Review Process Flow:
  
  Ensure that the demand source creation precedes the event triggering.
  If the event is triggered by an external system, verify the data transfer and timing.
  
  
  
  Debugging and Logs:
  
  Use transaction SLG1 to check application logs for more detailed error information.
  Debug the relevant function modules or BAdIs involved in demand source determination if necessary.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to message VN081 for any known bugs or patches.
  If the problem persists, consider raising a support ticket with SAP including detailed logs and system information.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SPRO – Customizing
  MB51 – Material Document List
  MB5B – Stocks for Posting Date
  SLG1 – Application Log
  VMI or Consignment specific monitoring transactions (varies by system)
  
  
  
  SAP Modules Involved:
  
  MM (Materials Management)
  LE (Logistics Execution)
  VMI (Vendor Managed Inventory)
  WM (Warehouse Management), if integrated
  
  
  
  Typical Scenarios:
  
  Vendor consignment stock consumption
  Vendor managed inventory replenishment
  Automatic creation of demand events in VMI scenarios
  
  
  
  
  If you provide the exact event, object type, and ID values from the error message, I can help you analyze the specific case further.