Message type: E = Error
Message class:  FINS_FI_MIG - SAP S/4HANA Finance: Data Migration 
Message number: 604
Message text: Migration run finished successfully
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The SAP error message FINS_FI_MIG604 indicates that a migration run has finished successfully, but it may also imply that there are some warnings or issues that need to be addressed. This message is typically associated with the Financial Accounting (FI) module during the migration process, particularly when migrating data from legacy systems to SAP S/4HANA.
Cause: Successful Migration: The message indicates that the migration process has completed without critical errors, but it may still contain warnings or informational messages that require attention. Data Quality Issues: There may be data inconsistencies or issues that were not severe enough to halt the migration but could affect the integrity of the data in the new system.
Configuration Issues: Certain configurations in the migration settings may not align perfectly with the data being migrated, leading to warnings.
Solution: Review Migration Logs: Check the detailed migration logs for any warnings or informational messages that may provide insight into what needs to
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