How To Fix QS734 - Internal error when reading classification

SAP Error Message - Details

• Message type: E = Error

• Message class: QS - QM: Master data

• Message number: 734

• Message text: Internal error when reading classification

What causes this issue?

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

System Response

How to fix this error?

Contact SAP.

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 QS734 - Internal error when reading classification ?

  The SAP error message QS734, which indicates an "Internal error when reading classification," typically arises during operations involving classification data in the SAP system. This error can occur in various contexts, such as when trying to access or manipulate classification data for materials, documents, or other objects.
  Possible Causes:
  
  Data Inconsistency: There may be inconsistencies or corruption in the classification data or the underlying database tables.
  Authorization Issues: The user may not have the necessary authorizations to access the classification data.
  System Bugs: There could be a bug in the SAP system or a specific transaction that is causing the error.
  Configuration Issues: Incorrect configuration settings in the classification system or related modules may lead to this error.
  Database Issues: Problems with the database, such as locks or corruption, can also trigger this error.
  
  Solutions:
  
  
  Check for Data Consistency:
  
  Use transaction codes like CL02 (Change Class) or CL03 (Display Class) to check if the classification data is intact.
  Run consistency checks on the classification data using transaction CL20 (Class Management).
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to access the classification data. Check the user roles and profiles.
  
  
  
  Check for System Notes and Patches:
  
  Look for SAP Notes related to the QS734 error in the SAP Support Portal. There may be specific patches or updates that address this issue.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the program or transaction that triggered the error to identify the root cause.
  
  
  
  Database Checks:
  
  If you suspect database issues, work with your database administrator to check for locks, corruption, or other anomalies.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including transaction codes, user actions, and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL01, CL02, CL03, and CL20 for managing classification data.
  SAP Notes: Regularly check the SAP Support Portal for updates and notes related to classification and error messages.
  Documentation: Review SAP documentation on classification management for best practices and troubleshooting tips.
  
  By following these steps, you should be able to diagnose and potentially resolve the QS734 error in your SAP system.