3789752 - Error: "The system query option '$select' has the not-allowed value" when entering a discount on a requisition in SAP Ariba Buying

I receive the following error when I enter a discount amount on a requisition in SAP Ariba Buying: The system query option '$select' has the not-allowed value 'CommentsCount?$select=DiscountAmount_amount,DiscountAmount_currencyCode_code,TotalCost_amount,TotalGrossAmountInUserCurrency_amount,TotalGrossAmountInUserCurrency_currencyCode_code'.

This error appears after entering a discount value that uses a comma as the decimal separator (for example, 5,00).

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