Message type: E = Error
Message class:  FINCS_MD_FSITEM - Consolidation Financial Statement Item Master Data 
Message number: 123
Message text: FS item is used in configuration of methods for interunit elimination.
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The SAP error message "FINCS_MD_FSITEM123: FS item is used in configuration of methods for interunit elimination" typically occurs in the context of financial consolidation processes, particularly when dealing with intercompany transactions and eliminations in SAP Financial Consolidation (FC) or SAP Business Planning and Consolidation (BPC).
Cause: This error indicates that a Financial Statement (FS) item is being referenced in the configuration of interunit elimination methods, but there may be an issue with how it is set up or used. Common causes include: Incorrect Configuration: The FS item may not be properly configured in the interunit elimination methods. Missing or Inconsistent Data: There may be missing data or inconsistencies in the configuration that prevent the system from processing the elimination correctly. Changes in FS Item: If the FS item has been modified or deleted after being used in the elimination configuration, it can lead to this error. Versioning Issues: If there are multiple versions of the configuration,
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