To import test requests from Postman, perform the following steps:
Export your Postman collection to JSON. See the instruction on Postman document: Importing and exporting data.
In Katalon Studio, with an API/Web Service project, click on the Postman icon.
Alternately, from Katalon Studio 8.3.0 onwards, you can import test requests via:
The Action button in the top menu bar:
In the top menu bar, click Action > API/Web Service > Import Postman.
The Tests Explorer panel:
In Tests Explorer, right-click on Object Repository > Import > From Postman.
In the dialog that displays, browse to your exported Postman local file and click OK.
The corresponding test requests are imported to Katalon Studio.