Do EWM provides any Rest API or OSLC API to create work item
Accepted answer
EWM supports an OSLC API. See https://jazz.net/wiki/bin/view/Deployment/CLMProductAPILanding.
This API supports CRUD operations on work items. Also see https://rsjazz.wordpress.com/2022/02/02/ewm-work-item-oslc-cm-api/ for some examples.