Insights Hub Visual Flow Creator - http request node

HTTP request PUT

following example can be used and adjusted accordingly:
https://github.com/mindsphere/vfc-examples/tree/main/WriteLocationToAsset

Note that in case only some of the variables (e.g. longitude and latitude) will be updated via PUT, then the rest of the variables under "location", variables that are not include in the PUT request, will be set to null:

HTTP request PATCH

in order to update only a single field, for example the "description" field, then in the github example above one needs to change the method to "Patch" (inside the http request node) and add following line:
msg.headers["Content-Type"] = "application/merge-patch+json";
in the function node:

Error 403

in case of 403 error, please make sure the option "Extended scopes" is enabled:


 

Error cannot parse JSON SyntaxError: Unexpected end of JSON input

in case of json syntax-error, please make sure the "Return" value is set to "a UTF string" inside the http request node: