Currency exchange rate import using web service

[KCPN]

Hello,

I'm trying to set up exchange rate import using available web service:

API I'm going to use for my test: 

https://api.unirateapi.com/api/rates?api_key=3dduQ18Xt2335GM3tJWEi8Qk1lKmfF60cyilrzx9wFqadR6kiAVSUas...

I created project in SOAPUI with WSDL file I took from 'Communication Arrangements':

I used user id and password I set in 'Communication Arrangements' but getting the error you can see in screenshot above.

Not sure if I'm doing something wrong. Generally, I have lack of understanding how exchange rate taken from external provider API will be picked up by interface and uploaded to SAP ByD.

Any help much appreciated.