ERROR message when using REST API to connect 2 Jira Service Management space

[ENWY]

Im trying to connect my Jira Service Maangement with my partners' jira using REST API but im getting the error below while running and Automation

Send web request

Error publishing web request. Response HTTP status:

401

Error response HTTP body:

{"errorMessages":["You do not have permission to create issues in this project."],"errors":{}}

any ideas what i did wrong?

[ENWY]

for now, im testing it via Sandbox

[ENWY]