John,

Look into the "With Connection" keyword as documented in Qlik Help‌. This allows you to override the base URL.

You may be able to define a control table with the list of table URLs or table names and pass that value as a parameter within a loop. I've sometimes found that if dollar sign expansion with $() does not work, ${} with brackets will.

I tried this unsuccessfully with another REST API, but that was only because there was a randomly generated parameter per table that I could not statically define in my control table/loop, otherwise the method seemed to work as expected. Perhaps ServiceNow works differently and you won't have this issue.

HTH,

Chance