Message type: E = Error
Message class:  GTR_FI - Grantor Fi Integration 
Message number: 090
Message text: Consumption Error: Billing amount bigger than EF open amount (Billdoc &1)
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The SAP error message GTR_FI090 indicates that there is a consumption error related to billing amounts in the context of financial transactions. Specifically, it states that the billing amount is greater than the open amount available in the corresponding document. This typically occurs in scenarios involving billing documents, such as invoices or credit memos, where the system checks the available open amounts against the amounts being billed.
Cause: Billing Amount Exceeds Open Amount: The primary cause of this error is that the billing amount you are trying to post exceeds the open amount that is available for consumption in the system. This can happen if: The open amount has already been partially billed or consumed. There is a mismatch in the amounts due to manual entries or incorrect calculations. The billing document is referencing an incorrect or outdated open amount. Data Entry Errors: Manual data entry errors can lead to incorrect billing amounts being entered.
Configuration Issues:
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