Salesforce Billing Standard Objects
CaptureInputParameter Class
CaptureOutputResult Class
InputParameter Class
OutputResult Class
PaymentGateway Interface
PaymentGateways Interface
PaymentGatewayParameter Class
PaymentGatewayStatus Interface
TransactionAPI Class
TransactionParameter Class
TransactionResult Class
TransactionResult.GatewayStatusType Enum
REST API for Converting Invoice Lines with Negative Balances
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