How To Fix ICC_CN866 - External document number changed in accounting document

SAP Error Message - Details

• Message type: E = Error

• Message class: ICC_CN - Nachrichten zum Druck vornumerierter SD-Belege

• Message number: 866

• Message text: External document number changed in accounting document

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICC_CN866 - External document number changed in accounting document ?

  The SAP error message ICC_CN866, which states "External document number changed in accounting document," typically occurs in the context of financial accounting and document management within SAP. This error indicates that there is a discrepancy between the external document number that was originally entered and the one that is currently being processed in the accounting document.
  Cause:
  
  Manual Changes: The external document number may have been manually changed after the document was created, leading to a mismatch.
  Data Migration Issues: If data was migrated from another system, inconsistencies in document numbers can arise.
  Integration Issues: If there are integrations with other systems (like third-party applications), the external document number may not be synchronized correctly.
  Configuration Settings: Incorrect configuration in the document management settings or accounting settings can lead to this error.
  
  Solution:
  
  Check Document Number: Verify the external document number in the accounting document and ensure it matches the original entry.
  Re-enter Document: If the document number has been changed unintentionally, you may need to revert to the original document number or re-enter the document with the correct number.
  Review Configuration: Check the configuration settings in SAP related to document management and accounting to ensure they are set up correctly.
  Data Consistency Check: Perform a data consistency check to identify any discrepancies in the document numbers across the system.
  Consult Documentation: Refer to SAP documentation or notes related to this error for specific guidance and troubleshooting steps.
  Contact Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex integrations or configurations.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like FB03 (Display Document) or FB02 (Change Document) to view or modify the accounting document.
  SAP Notes: Check for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches.
  User Authorization: Ensure that the user has the necessary authorizations to make changes to accounting documents.
  Testing in Development: If changes are made to configurations or document management settings, it is advisable to test these changes in a development or quality assurance environment before applying them to production.
  
  By following these steps, you should be able to identify the cause of the ICC_CN866 error and implement a suitable solution.