How To Fix W_CB378 - Order key &1 was used more than once

W_CB378 - Overview

• Message type: E = Error

• Message class: W_CB -

• Message number: 378

• Message text: Order key &1 was used more than once

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_CB378 - Order key &1 was used more than once ?

  SAP Error Message:
  W_CB378 Order key &1 was used more than once
  
  Meaning / 
  Cause:
  This warning message occurs when the same order key (also called order number or order ID) is used multiple times in a context where it must be unique. Typically, this happens during data entry, order creation, or data upload processes where the system expects each order key to be unique but finds duplicates.
  Common scenarios include:
  
  Uploading or creating multiple sales or production orders with the same order number.
  Data migration or batch input sessions where the order key is repeated.
  Custom programs or interfaces that do not properly generate unique order keys.
  Manual entry errors where the user accidentally reuses an existing order key.
  
  
  Explanation:
  In SAP, order keys (such as sales order numbers, production order numbers, or purchase order numbers) are unique identifiers for documents or transactions. The system uses these keys to track and manage orders. If the same key appears more