Abstract: An example transaction processing system and method are disclosed that employ validating a trace identifier (“trace ID”) of a calling service by a recipient service. In particular, systems and methods are provided such that application programing interface (API) calls to a clearinghouse can be validated and trusted and the trusted trace ID can be used in transactions by the clearinghouse to other entities involving the call to the clearinghouse.

Abstract: A method includes generating a payor channel capacity model by modeling a channel capacity between a resource management system and a payor; generating a transaction request model by modeling transaction requests destined for the payor; defining a plurality of Quality of Service (QoS) bands based on the payor channel capacity model and the transaction request model, respective ones of the plurality of QoS bands being indicative of a measure of relative opportunity to establish a connection on the channel between the resource management system and the payor; receiving a current transaction request for the payor at the resource management system; assigning the current transaction request to one of the QoS bands; and establishing a current connection on the channel between the resource management system and the payor to communicate the current transaction request from the resource management system to the payor based on the QoS band assigned to the current transaction request.