Can't upload CSV to AnalyticsUploadStorage via REST

Hi everyone,

I'm using Postman to test the REST APIs for TW Analytics and I've made most of them work even though there is a lack of proper list of all APIs pertaining to Analytics.

I'm having problem with uploading the CSV to AnalyticsUploadStorage which will be used to create a dataset.

In the documentation here, they even mention an incorrect service name to do that (CreateFileText instead of CreateTextFile). I got the correct API endpoint by calling /Thingworx/Things/AnalyticsUploadStorage but I get the following error when I try to call it:

Unable to Invoke Service CreateTextFile on AnalyticsUploadStorage : null

Here is the Postman REST call:

POST https://<serverIP>/Thingworx/Things/AnalyticsUploadStorage/Services/CreateTextFile?appKey=<appKey>

form-data:

data: csv_file.csv

path: "/UptimeDowntimeData/csv_file.csv"

overwrite: true

I've also tried passing these values as application/json with data field having content of csv file as a string but to no avail.