I have been using http://localhost:8080/engine-rest/task/task-id/complete for completing the task in postman. I need an postman api url for completing the task by using task definition key instead of task-id
If you have >1 process instances running and several instances of this task defiition, how should the process engine know, only based on the task definition key, which of the task instances you would like to complete?
Maybe you could use a (unique) business key value per process instances and use this when querying the list of tasks.