How To Fix RY145 - Transaction &1 is already included as an external reference in trans. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 145

• Message text: Transaction &1 is already included as an external reference in trans. &2

What causes this issue?

The transaction you have entered as a reference has already been
specified as a reference transaction in another generic transaction. As
a consequence, the transaction may be selected twice.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RY145 - Transaction &1 is already included as an external reference in trans. &2 ?

  The SAP error message RY145 indicates that a transaction (identified by &1) is already included as an external reference in another transaction (identified by &2). This typically occurs in the context of financial transactions, where a document or transaction cannot be referenced multiple times in a way that violates the system's integrity rules.
  Cause:
  
  Duplicate Reference: The primary cause of this error is that the same transaction is being referenced more than once in a way that is not allowed by the system. This can happen if you are trying to create a new transaction that references an existing one that is already linked to another transaction.
  Incorrect Data Entry: Users may inadvertently enter the same transaction number in multiple places, leading to conflicts.
  System Configuration: There may be specific configurations or settings in the SAP system that restrict the referencing of transactions.
  
  Solution:
  
  Check Transaction References: Review the transactions involved. Ensure that the transaction you are trying to reference (transaction &1) is not already linked to another transaction (transaction &2). You can do this by checking the document flow or transaction history.
  Use Unique References: If you need to create a new transaction, ensure that you are using a unique reference that is not already in use.
  Consult Documentation: Refer to SAP documentation or help files for specific guidelines on how to handle external references in transactions.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide insights based on your specific configuration and usage.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help you analyze the situation, such as:
  
  FB03: Display Document
  FB02: Change Document
  FBL1N: Vendor Line Item Display
  FBL3N: G/L Account Line Item Display
  
  
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional context or solutions.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.