Hi,
Take a look at consume REST API documention to consume GET and POST REST Service
https://docs.mendix.com/howto/integration/consume-a-rest-service/
Hi Dona,
This learning path provides you with some examples: Mendix Academy - Create a REST API (Micro Learning)
If you need authentication you can check the username and password option in the security settings of your REST service. You need to select a userrole that has access to your service and make sure that the username and password of the user are sent in a request header.
Floor