An RPC conversion processing system that performs relaying between a first application and second application of different protocols, the RPC conversion processing system comprising: a first interface provider connected to the first application and configured to provide a first interface for the first application; an RPC conversion relay function section ; and a second interface provider connected to the second application and configured to provide a second interface for the second application, a storage configured to store common data structure generation source information which is common information based on which setting information is generated in the first interface provider , the second interface provider , and the RPC conversion relay function section ; a first setting information generator configured to generate first setting information to be provided to the first interface provider and the RPC conversion relay function section , based on the common data structure generation source information; and a second setting information generator configured to generate second setting information to be provided to the second interface provider and the RPC conversion relay function section , based on the first setting information, wherein the first interface provider receives a request for processing an RPC from the first application , and the RPC conversion relay function section converts the RPC into an RPC of the second application and outputs the RPC of the second application to the second interface provider , thereby relaying an RPC between the first application and the second application , wherein the first interface provider , the RPC conversion relay function section , and the second interface provider are included in the same container or virtual machine. a first interface provider connected to the first application and configured to provide a first interface for the first application; an RPC conversion relay function section ; and a second interface provider connected to the second application and configured to provide a second interface for the second application, a storage configured to store common data structure generation source information which is common information based on which setting information is generated in the first interface provider , the second interface provider , and the RPC conversion relay function section ; a first setting information generator configured to generate first setting information to be provided to the first interface provider and the RPC conversion relay function section , based on the common data structure generation source information; and a second setting information generator configured to generate second setting information to be provided to the second interface provider and the RPC conversion relay function section , based on the first setting information, wherein the first interface provider receives a request for processing an RPC from the first application , and the RPC conversion relay function section converts the RPC into an RPC of the second application and outputs the RPC of the second application to the second interface provider , thereby relaying an RPC between the first application and the second application , wherein the first interface provider , the RPC conversion relay function section , and the second interface provider are included in the same container or virtual machine. <EOS>