Message type: E = Error
Message class:  FINS_FI_SIF - SAP S/4HANA Finance: Subsequent Implementation of Functions 
Message number: 012
Message text: Target ledger &1 is a leading ledger
Ledger &V1& is a
<DS:GLOS.2454F44153348247B1D0A8EBE82CEB8B>Leading Ledger</> in the
system which can't be used as a target ledger in a project.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Please use only standard ledgers as target ledgers in the IMG
Customizing activity
<DS:SIMG.FINSVC_SIL_PROJ>Create Project for Implementation of
Accounting Principle</>.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FINS_FI_SIF012 indicates that there is an issue related to the target ledger in a financial transaction. Specifically, the message states that the target ledger you are trying to use is a leading ledger. This can occur in various scenarios, such as during the posting of financial documents or when executing certain financial transactions.
Cause: The primary cause of this error is that the system is trying to post to a ledger that is designated as a leading ledger. In SAP, a leading ledger is the primary ledger that reflects the company's financial position and is used for reporting purposes. The system restricts certain operations on leading ledgers to maintain data integrity and ensure compliance with accounting standards.
Solution: To resolve this error, consider the following steps: Check Ledger Configuration: Verify the configuration of the ledgers in your system. Ensure that you are using the correct ledger for the transaction you are
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