Message type: E = Error
Message class:  FINS_FI_MIG - SAP S/4HANA Finance: Data Migration 
Message number: 205
Message text: Data Migration not yet completed
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The SAP error message FINS_FI_MIG205 indicates that a data migration process has not yet been completed. This error typically arises during the migration of financial data, particularly when using the SAP S/4HANA Migration Cockpit or similar tools for data migration.
Cause: Incomplete Migration Process: The most common cause is that the data migration process has not been fully executed or completed. This could be due to various reasons, such as: The migration job was interrupted or failed. Required data or configurations were not set up correctly before starting the migration. Dependencies on other migration tasks that have not been fulfilled. Data Validation Issues: There may be validation errors in the data being migrated, which can prevent the completion of the migration process.
Configuration Issues: Incorrect configuration settings in the migration cockpit or related tools can lead to incomplete migration.
Solution: Check Migration Status: Go to the SAP S/4HANA Migration Cockpit and check the status of the migration tasks. Ensure
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