How To Fix TG820 - No entry found in table UVERS (system not switched?)

SAP Error Message - Details

• Message type: E = Error

• Message class: TG - Messages for Upgrade Repository Switch

• Message number: 820

• Message text: No entry found in table UVERS (system not switched?)

What causes this issue?

All upgrades are entered in table UVERS. The program searches for an
entry in UVERS. This entry does not exist.
This generally indicates serious errors in an earlier upgrade. Please
check whether the system was already provided with a repository switch
upgrade successfully. If necessary, contact your system administration.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TG820 - No entry found in table UVERS (system not switched?) ?

  The SAP error message TG820, which states "No entry found in table UVERS (system not switched?)", typically indicates that the system is unable to find the necessary versioning information in the UVERS table. This can occur in various scenarios, particularly when dealing with version management in SAP.
  Cause:
  
  Missing Entries: The UVERS table is used to store versioning information for various objects in SAP. If there are no entries in this table, it may indicate that the system has not been properly initialized for version management.
  System Configuration: The system may not be configured correctly for versioning, or the versioning feature may not be activated.
  Transport Issues: If the system is newly set up or if there have been recent transports, the necessary entries may not have been transported correctly.
  Database Issues: There could be issues with the database that prevent the table from being accessed or read correctly.
  
  Solution:
  
  Check Table UVERS: Use transaction SE11 or SE16 to check the contents of the UVERS table. If it is empty, you may need to initialize or configure version management.
  Activate Version Management: If version management is not activated, you may need to activate it in the relevant configuration settings. This can usually be done in the customizing settings of the relevant module.
  Transport Requests: If the system is newly set up, ensure that all necessary transport requests have been imported correctly. Check with your Basis team to confirm that all relevant transports have been applied.
  System Switch: If the error message suggests that the system is not switched, ensure that the system is in the correct state for version management. This may involve checking the system configuration or performing a system switch if applicable.
  Consult Documentation: Refer to SAP documentation or notes related to version management and the UVERS table for specific guidance on your version of SAP.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE16 (Data Browser), and SPRO (Customizing).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Version Management: Familiarize yourself with how version management works in SAP and the role of the UVERS table in that process.
  
  By following these steps, you should be able to diagnose and resolve the TG820 error in your SAP system.