How To Fix /SCWM/DLV_API020 - Item keys must be unique

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/DLV_API -

• Message number: 020

• Message text: Item keys must be unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/DLV_API020 - Item keys must be unique ?

  The SAP error message /SCWM/DLV_API020 Item keys must be unique typically occurs in the context of the SAP Extended Warehouse Management (EWM) module when there is an attempt to process a delivery or a related document that contains duplicate item keys. This error indicates that the system has detected multiple entries for the same item key, which violates the uniqueness requirement for item keys in the context of deliveries.
  
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same item is being added multiple times to a delivery or a related document, leading to duplicate item keys.
  Data Import Issues: If data is being imported from an external system or through a batch input session, it may inadvertently contain duplicates.
  
  Configuration Issues: There may be issues with the configuration of the delivery document types or item categories that allow for duplicates.
  User Error: Manual entry errors where users inadvertently add the