Required Privilege to get manufacturing work orders

We are customizing a label printing solution in which we are printing the labels by getting work orders. For the particular user, we want that user should only be able to access the work orders and should get the data from the Rest API we are calling. We are calling the workOrders and processWorkOrders REST API endpoints to get the data for the respected work orders. Currently the get API response is success from postman and we were able to get the Response Code status as 200 but the data is not returning. On the other hand, we do not