The following Diagram describes the inheritance of CustomerPayment and BusinessPartnerPayment from PartyPayment and specific relationships for each of them.<br/>But some relationships used between the Party’s Entities are not reused when they are further defined in Customer Entities. In this case, the relationship between Party’s Entities are highlighted in bold pale orange such as the one between PartyBill and BusinessPartnerPaymentItem.<br/>A payment item is the application of PartyPayment. Each PaymentItem represents an amount applied to a Bill or applied BillingRate.<br/>