Postman Complete Task from API

[prasadps]

do you want to make the call from within the Process application or outside. If it is outside you have to use a java rest client. If it is from process application refer

Completing a User task with Java API

In REST API, you can use this method: https://docs.camunda.org/manual/7.10/reference/rest/task/post-submit-form/ you should find a similar one in Java API