How To Fix IST_EBS172 - Reconciliation key not determined (problem in event T402)

SAP Error Message - Details

• Message type: E = Error

• Message class: IST_EBS - Interface Between IS-T and External Billing System

• Message number: 172

• Message text: Reconciliation key not determined (problem in event T402)

What causes this issue?

The function module called at event T402 could not find a
reconciliation key.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IST_EBS172 - Reconciliation key not determined (problem in event T402) ?

  The SAP error message IST_EBS172, which states "Reconciliation key not determined (problem in event T402)," typically occurs in the context of Electronic Bank Statement (EBS) processing. This error indicates that the system was unable to determine a reconciliation key for a specific transaction, which is necessary for matching bank statement items with the corresponding items in the SAP system.
  Causes:
  
  Missing Configuration: The reconciliation key may not be properly configured in the system. This can happen if the necessary settings for the bank statement processing are incomplete or incorrect.
  Incorrect Mapping: The mapping between the bank statement items and the corresponding accounting entries may not be set up correctly.
  Data Issues: There may be issues with the data in the bank statement or in the corresponding accounting entries, such as missing or incorrect information.
  Event T402: This event is related to the processing of incoming bank statements. If there is a problem with the event handling or if the event is not triggered correctly, it can lead to this error.
  
  Solutions:
  
  
  Check Configuration:
  
  Go to the configuration settings for Electronic Bank Statement processing in SAP (Transaction code: OBBA or similar).
  Ensure that the settings for the bank account, house bank, and reconciliation accounts are correctly defined.
  
  
  
  Review Mapping:
  
  Verify the mapping of bank statement items to the corresponding G/L accounts. This can be done in the configuration settings for the bank statement processing.
  Ensure that the correct transaction types and posting rules are defined.
  
  
  
  Data Validation:
  
  Check the bank statement data for any inconsistencies or missing information. Ensure that all necessary fields are populated correctly.
  Review the accounting entries that should be matched with the bank statement items to ensure they are complete and accurate.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the event T402 to identify any specific problems in the processing logic.
  You may need to involve your technical team or SAP support to analyze the event handling.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to Electronic Bank Statement processing for any known issues or additional troubleshooting steps.
  
  
  
  SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. Provide them with the error message details and any relevant configuration or data information.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBBA (for bank statement configuration), FEBAN (for processing bank statements), and others related to financial accounting.
  SAP Notes: Search for SAP Notes related to EBS processing and the specific error message for any patches or updates that may address the issue.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the IST_EBS172 error in your SAP system.