How To Fix SA666 - Not allowed in READ_ONLY version

SAP Error Message - Details

• Message type: E = Error

• Message class: SA -

• Message number: 666

• Message text: Not allowed in READ_ONLY version

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SA666 - Not allowed in READ_ONLY version ?

  The SAP error message SA666, which states "Not allowed in READ_ONLY version," typically occurs when you attempt to perform an operation that modifies data in a system that is currently in a read-only mode. This can happen in various scenarios, such as when the system is in maintenance mode, during a system upgrade, or when a specific transaction is restricted to read-only access.
  Causes:
  
  System Maintenance: The SAP system may be undergoing maintenance or upgrades, which can put it into a read-only state.
  Database Locking: The database may be locked for certain operations, preventing any modifications.
  User Permissions: The user may not have the necessary permissions to perform write operations in the current context.
  Transport Requests: If you are trying to import transport requests or make changes to the system configuration, and the system is in a read-only state, this error can occur.
  
  Solutions:
  
  Check System Status: Verify if the system is indeed in a read-only state. You can check this with your system administrator or by looking at system logs.
  Wait for Maintenance to Complete: If the system is undergoing maintenance, you may need to wait until the maintenance is completed and the system is back to normal operation.
  Check User Permissions: Ensure that your user account has the necessary permissions to perform the operation you are attempting. If not, contact your system administrator to adjust your permissions.
  Review Database Locks: If the database is locked, you may need to consult with your database administrator to understand the reason for the lock and when it will be released.
  Use the Correct Environment: If you are working in a development or test environment, ensure that you are not trying to perform operations that are restricted in that environment.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance related to the SA666 error. SAP frequently updates its knowledge base with solutions to common issues.
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the read-only state.
  Transaction Codes: Familiarize yourself with transaction codes that may be relevant to your operations, such as SE09 (Transport Organizer) or SE10 (Transport Organizer for Workbench Requests).
  
  If the issue persists after checking these aspects, it may be necessary to escalate the problem to your SAP Basis team or SAP support for further investigation.