Calling a Sub-Process from plain Java has become much simpler **since Axon.ivy 6.3.** There is now a nice fluent API to invoke a process and get back the the resulting data. The entry point is here: [ch.ivyteam.ivy.process.call.SubProcessCall][1] You can find an example in the ConnectivityDemos where a Java REST-Service implementation starts a Process in the engine. See `ConnectivityDemos` -> `com.axonivy.connectivity.rest.provider.ApprovalService.create(String, String, String)` ITask task = SubProcessCall.withPath("rest/createApproval") .withParam("title", title) .withParam("description", description) .call() .get("approvalTask", ITask.class); [1]: http://developer.axonivy.com/doc/latest/publicApi/ch/ivyteam/ivy/process/call/SubProcessCall.htmlhttps://developer.axonivy.com/doc/latest/public-api/ch/ivyteam/ivy/process/call/SubProcessCall.html

Calling a Sub-Process from plain Java has become much simpler since **since Axon.ivy 6.3. 6.3.** There is now a nice fluent API to invoke a process and get back the the resulting data. The entry point is here: [ch.ivyteam.ivy.process.call.SubProcessCall][1] You can find an example in the ConnectivityDemos where a Java REST-Service implementation starts a Process in the engine. See `ConnectivityDemos` -> `com.axonivy.connectivity.rest.provider.ApprovalService.create(String, String, String)` ITask task = SubProcessCall.withPath("rest/createApproval") .withParam("title", title) .withParam("description", description) .call() .get("approvalTask", ITask.class); [1]: http://developer.axonivy.com/doc/latest/publicApi/ch/ivyteam/ivy/process/call/SubProcessCall.html

Calling a Sub-Process from plain Java has become much simpler since Axon.ivy 6.3. There is now a nice fluent API to invoke a process and get back the the resulting data. The entry point is here: [ch.ivyteam.ivy.process.call.SubProcessCall][1] You can find an example in the ConnectivityDemos where a Java REST-Service implementation starts a Process in the engine. See `ConnectivityDemos` -> `com.axonivy.connectivity.rest.provider.ApprovalService.create(String, String, String)` ITask task = SubProcessCall.withPath("rest/createApproval") .withParam("title", title) .withParam("description", description) .call() .get("approvalTask", ITask.class); [1]: http://developer.axonivy.com/doc/latest/publicApi/ch/ivyteam/ivy/process/call/SubProcessCall.html