Message type: E = Error
Message class:  FBS_SE - Messages for Transfer of FIN-MDM Data 
Message number: 126
Message text: Data inconsistency in field &2 of structure &1 (value &3)
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The SAP error message FBS_SE126 indicates a data inconsistency in a specific field of a structure. This error typically arises during financial transactions or when processing data in the SAP system, particularly in the context of financial accounting or controlling modules.
Cause: The error message FBS_SE126 is triggered when the system detects that the value in a specific field (denoted as &2) of a structure (denoted as &1) does not conform to the expected format, range, or business logic. The value that is causing the inconsistency is represented by &3. Common causes for this error include: Data Entry Errors: Incorrect data input by users, such as entering a value that is out of the allowed range.
Configuration Issues: Incorrect configuration settings in the financial module that lead to inconsistencies in data processing. Data Migration Issues: Problems during data migration from legacy systems to SAP, where data integrity is not maintained. Custom Code: If there are custom
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