Invoice: properties: Amount: type: number CourseID: type: string x-nullable: true CreatedByID: type: string x-nullable: true CreatedDate: type: string x-nullable: true Currency: type: string x-nullable: true DueDate: type: string x-nullable: true ID: type: string Invoicenumber: type: string x-nullable: true LastModifiedByID: type: string x-nullable: true LastModifiedDate: type: string x-nullable: true Status: type: string x-nullable: true TransactionID: type: string x-nullable: true UserID: type: string x-nullable: true type: object