How To Fix RY171 - External transaction number &: Unable to read internal number &

SAP Error Message - Details

• Message type: E = Error

• Message class: RY - Messages for RM Basis

• Message number: 171

• Message text: External transaction number &: Unable to read internal number &

What causes this issue?

You wanted to export the transaction. However, the system was unable to
find it on the database.
The system determines an internal number for the transaction from the
external number. It then uses this internal number to access the
transaction on the database. However, it could not find a
transactionwith this internal number on the database.

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?

Inform your system administrator.

Procedure for System Administrators

No valid internal transaction number was transferred to the function
module. Check the calls. If the call is part of a standard SAP routine,
then contact SAP.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RY171 - External transaction number &: Unable to read internal number & ?

  The SAP error message RY171, which states "External transaction number &: Unable to read internal number &," typically occurs in the context of financial transactions, particularly when dealing with external transaction numbers that are supposed to map to internal SAP numbers. This error can arise in various scenarios, such as during the posting of documents, processing of payments, or when integrating with external systems.
  Causes:
  
  
  Missing Mapping: The external transaction number does not have a corresponding internal number in the SAP system. This can happen if the external transaction was not properly recorded or if there was an issue during data import.
  
  
  Data Integrity Issues: There may be inconsistencies in the data, such as missing records in the database that link external transaction numbers to internal ones.
  
  
  Configuration Issues: The system may not be configured correctly to handle the mapping between external and internal transaction numbers.
  
  
  Authorization Issues: The user may not have the necessary permissions to access the internal number associated with the external transaction.
  
  
  System Errors: There could be a temporary system error or a bug in the SAP application that is causing the issue.
  
  
  Solutions:
  
  
  Check Mapping: Verify that the external transaction number is correctly mapped to an internal number. This may involve checking the relevant tables in the SAP database.
  
  
  Data Validation: Ensure that all necessary data has been entered correctly and that there are no missing records. You may need to run reports or queries to identify any discrepancies.
  
  
  Configuration Review: Review the configuration settings related to external and internal transaction number handling. Ensure that all necessary settings are correctly configured.
  
  
  User Permissions: Check the user roles and permissions to ensure that the user encountering the error has the necessary access rights to view and process the internal transaction numbers.
  
  
  Consult Documentation: Refer to SAP documentation or support notes related to this error message for any specific guidance or patches that may address the issue.
  
  
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights based on the specific version of SAP you are using.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SE11 (Data Dictionary), SE16 (Data Browser), or ST22 (Dump Analysis).
  SAP Notes: Search for SAP Notes related to error RY171 in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  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 diagnose and resolve the RY171 error in your SAP system.