How to make API POST Requests using Integration Service in Studio?


I’ve been trying to replicate POST requests in Studio Web using a custom connector, but I have not had much luck with that.
I have created a custom connector with Square Sandbox API.
In Integration Service, the request works as expected:

But in Studio Web, when selecting type of object in Insert Record activity, a pop up with the following message appears: “Object reference not set to an instance of an object”

Why is that and what can I do in order to actually use the insert operation with this connector?
This is how the request fields look like:


Is your payments object not initialized?


Hi, I’m not sure about that. How am I supposed to initialize it?

Welcome to the forum

The Connection Builder is still in Preview, so we would assume that some scenarios will fail also.

We would recommend to provide a feedback here along with:

  • REST API Name
  • Endpoint Details / References
  • Request details e.g. Header/Body details