Message type: E = Error
Message class:  FINS_IC_CUST - Manage Currencies: Customizing 
Message number: 051
Message text: Extension ledger &1 will be processed although it isn't a standard ledger
The extension ledger &V1& will be processed during data processing in
the project cockpit. Extension ledgers are automatically added to the
set of ledgers for processing by the system.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FINS_IC_CUST051 indicates that an extension ledger is being processed, but it is not recognized as a standard ledger. This can occur in the context of financial accounting, particularly when dealing with extension ledgers in the SAP system.
Cause: Non-Standard Ledger: The extension ledger you are trying to process is not defined as a standard ledger in the system. This could be due to configuration settings or the way the ledger was created.
Configuration Issues: There may be issues in the configuration of the ledger in the system, such as missing settings or incorrect parameters. Data Inconsistencies: There might be inconsistencies in the data related to the ledger, which could lead to the system not recognizing it as a standard ledger.
Solution: Check Ledger Configuration: Go to the configuration settings for ledgers in SAP (Transaction Code: OB22). Verify that the extension ledger is correctly defined and that it meets the criteria for being a standard
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