How To Fix CNV_00001520 - Table &1 is read-only.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 520

• Message text: Table &1 is read-only.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001520 - Table &1 is read-only. ?

  The SAP error message CNV_00001520 indicates that a specific table (denoted as &1 in the message) is read-only. This typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during system upgrades.
  Cause:
  
  Table Locking: The table may be locked due to ongoing transactions or processes that prevent any modifications.
  Read-Only Status: The table might be set to a read-only status in the database or within the SAP system configuration.
  Data Migration Tools: If you are using a data migration tool (like SAP S/4HANA Migration Cockpit or other conversion tools), the tool may be trying to write to a table that is not intended for modification during the migration process.
  Authorization Issues: The user executing the operation may not have the necessary permissions to write to the table.
  
  Solution:
  
  Check Table Status: Verify if the table is indeed set to read-only. You can do this by checking the table properties in the Data Dictionary (SE11).
  Unlock the Table: If the table is locked, identify the process that is holding the lock and resolve it. You can use transaction SM12 to check for locks.
  Review Migration Settings: If you are using a migration tool, ensure that the configuration is correct and that you are not trying to modify a table that should remain unchanged during the migration.
  User Authorizations: Ensure that the user executing the operation has the necessary authorizations to write to the table. You can check this in transaction SU53 or by reviewing the user's roles and authorizations.
  Consult Documentation: Refer to the specific documentation for the migration tool or process you are using to ensure that you are following the correct procedures.
  
  Related Information:
  
  Transaction Codes: 
  
  SE11: Data Dictionary to check table properties.
  SM12: To check and manage table locks.
  SU53: To analyze authorization issues.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Migration Tools: Familiarize yourself with the specific migration tool you are using, as each may have its own set of rules and configurations regarding table access.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP data migration.