How To Fix RW018 - FI/CO interface: Currency item entered several times

SAP Error Message - Details

• Message type: E = Error

• Message class: RW - Interface to Accounting

• Message number: 018

• Message text: FI/CO interface: Currency item entered several times

What causes this issue?

Currency information was transferred several times in the current
document. The keys for the currency data must, however, be unique.
Origin of the document: &v1&, &v2&

System Response

The document could not be posted.

How to fix this error?

This is a system error of the calling application.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RW018 - FI/CO interface: Currency item entered several times ?

  The SAP error message RW018, which states "FI/CO interface: Currency item entered several times," typically occurs in the context of financial transactions where currency items are being processed. This error indicates that the system has detected duplicate entries for currency items in the FI/CO interface, which can lead to inconsistencies in financial reporting and processing.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same currency item has been entered multiple times in the transaction data. This can happen due to user error, data import issues, or incorrect configuration in the system.
  Data Migration Issues: If data has been migrated from another system, there may be duplicates that were not properly cleaned up before the migration.
  Configuration Errors: Incorrect settings in the configuration of the FI/CO interface can lead to the system not recognizing unique currency items correctly.
  
  Solution:
  
  Check for Duplicates: Review the transaction data to identify any duplicate currency items. This can often be done by running reports or queries in SAP to list the entries for the specific transaction.
  Correct the Data: Once duplicates are identified, you can either delete the duplicate entries or correct them to ensure that each currency item is unique.
  Review Data Migration Processes: If the issue arose after a data migration, review the migration process to ensure that duplicates are not being introduced. Clean up the data before importing it into SAP.
  Configuration Review: Check the configuration settings for the FI/CO interface to ensure that they are set up correctly. This may involve consulting with your SAP Basis or FI/CO configuration team.
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for common issues.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like FB03 (Display Document) or FBL1N (Vendor Line Item Display) to review the entries related to the error.
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They may provide patches or additional guidance based on the specific version of SAP you are using.
  Documentation: Review the SAP documentation related to the FI/CO interface for any additional insights or best practices regarding currency handling.
  
  By following these steps, you should be able to resolve the RW018 error and ensure that your financial transactions are processed correctly without duplicate currency items.