Learning about your API capabilities
The basic concept of how Connect interfaces with your application is that an AWS service, such as Lambda, communicates with it via an API to send and receive data. How this communication takes place can vary. Common communication methods include REST, SOAP, GraphQL, and gRPC, to name a few. I would say that REST is the most common today. For our example, Lambda will mimic an API request. This simplicity limits the number of moving parts and ensures that the test will be successful.
To learn about your specific application's API capabilities in your environment, you will have to review its documentation. Not all applications publish this information readily, and you might have to contact the support department to get the required information to make your interface work.
Note
For API write operations, it's important to have some form of authorization in place, such as entering a customer number, order number, or birth date. If...