How To Fix UMG066 - Shadow table is not available

SAP Error Message - Details

• Message type: E = Error

• Message class: UMG - Message Class for the Unicode Migration Tool.

• Message number: 066

• Message text: Shadow table is not available

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UMG066 - Shadow table is not available ?

  The SAP error message UMG066, which states "Shadow table is not available," typically occurs in the context of SAP's User Management Engine (UME) or when dealing with user management and authorization issues. This error indicates that the system is unable to access the shadow table that is required for certain operations, such as user authentication or authorization checks.
  Causes:
  
  Database Issues: The shadow table may not exist, or there may be issues with the database connection.
  Configuration Problems: The UME configuration might be incorrect, leading to the system not being able to locate the shadow table.
  Transport Issues: If the system has recently undergone a transport, the shadow table may not have been transported correctly.
  System Upgrade: After an upgrade, certain tables may not have been properly migrated or created.
  Authorization Issues: The user may not have the necessary permissions to access the shadow table.
  
  Solutions:
  
  Check Database Connection: Ensure that the database is up and running and that the connection settings in the SAP system are correct.
  Verify Shadow Table Existence: Check if the shadow table exists in the database. You can do this by querying the database directly or using transaction codes like SE11 (Data Dictionary) to look for the table.
  Review UME Configuration: Go to the UME configuration settings in the SAP NetWeaver Administrator and ensure that the settings are correct and that the shadow table is properly defined.
  Transport Check: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were transported correctly.
  System Logs: Review the system logs (transaction SM21) for any related errors that might provide more context about the issue.
  User Authorizations: Ensure that the user encountering the error has the necessary authorizations to access the shadow table.
  Recreate Shadow Table: If the shadow table is missing or corrupted, you may need to recreate it. This should be done with caution and ideally in consultation with SAP support or a database administrator.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to UMG066 for any specific patches or updates that may address this issue.
  Documentation: Review the official SAP documentation for UME and shadow tables to understand their role and configuration.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.