HTTP with SOAP web service (xml)

I am building an application with ionic 3, in which I must consult a web service SOAP (xml), and I tried it with HTTP:
but it does not work just for me, but it works when I call a JSON, but it’s not what I need!
someone help me.
this is the web service that I need to consume:

The question is kinda confusing, can you post the url to the webservice here? are you saying it ss returning XML and not JSON?

You need to convert the XML response to JSON.
You can use something like this -