Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 099
Message text: Due date falls before posting date
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The SAP error message FI099, which states "Due date falls before posting date," typically occurs in the context of financial transactions, particularly when dealing with invoices, payments, or other financial postings. This error indicates that the due date of a transaction is set to a date that is earlier than the posting date, which is not allowed in SAP.
Cause: Incorrect Date Entry: The due date has been manually entered or calculated incorrectly, resulting in a date that is earlier than the posting date. System Configuration: There may be settings in the system that affect how due dates are calculated or defaulted. Data Migration Issues: If data has been migrated from another system, there may be inconsistencies in date formats or values. Business Logic: Certain business rules may dictate that due dates must always be after the posting date, and this rule is being violated.
Solution: Check Dates: Review the posting date and due date in the
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