Message type: E = Error
Message class:  FINS_FI_MIG - SAP S/4HANA Finance: Data Migration 
Message number: 121
Message text: CO document &1 &2: version &3 has unknown valuation view &4 in TKA09
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The SAP error message FINS_FI_MIG121 indicates an issue related to the valuation view in the context of CO (Controlling) documents during a migration or data transfer process. This error typically arises when the system encounters a valuation view that is not defined or recognized in the configuration settings.
Cause: Unknown Valuation View: The error suggests that the valuation view specified in the CO document is not found in the TKA09 table, which is used to maintain valuation views for controlling.
Configuration Issues: There may be missing or incorrect configuration settings in the controlling area or valuation view settings. Data Migration Issues: If you are migrating data from an older system or a different environment, the valuation views may not have been properly transferred or defined in the new system.
Solution: Check TKA09 Table: Go to transaction SE16 or SE16N and check the TKA09 table to see if the valuation view specified in the error message exists.
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