Processing incoming XML in webhook pipeline

As of my understanding today I don't believe there is a short / simple solution to it. There isn't anything in Pipelines that will convert XML to JSON unless you're using the Quickbase API. 

I can't find anything about Jinja being able to parse a strict XML response but I could be wrong on that front. You could possibly write the entire XML payload into a Quickbase text field and try to use formulas to split it out and manage it somehow, but based on your sample payload that will get tricky given the list of inventory counts. Your best bet is to evaluate a non-pipelines solution and do either a codepage or custom script where you can access XML parsing libraries to be able to transform and load it into QB.