Create TestSet using Rest API

Hi

I'm using the Rest API v5.0 to create test set automatically using a python tool.

I'm using the POST test-run API that creates a new test run as defined here: https://api.inflectra.com/Spira/Services/v5_0/RestServiceOperation.aspx?uri=projects%2f%7bproject_id%7d%2ftest-sets&method=POST

Everything is working perfectly, the test set is being created using the values I set in the JSON body, however there's only one value that is being ignored which is the 'TestConfigurationSetId'.

I use the integer values from the get configuration API (https://api.inflectra.com/Spira/Services/v5_0/RestServiceOperation.aspx?uri=projects%2f%7bproject_id%7d%2ftest-configuration-sets&method=GET)

Please assist !!

Thanks,

Oz