API Access through Postman

Hello all,

I have some (maybe basic) questions about using the API.
I have donations enabled on my account and want to use the sid1 parameter to access status and generation data that is publicly available.
I’m currently using postman to make these calls, creating a GET request with the api url provided in the documentation:

https://pvoutput.org/service/r2/getsystem.jsp

then I am adding sid1 = the site id of a site on the ladder,
key = my generated api key from settings.
Maybe important to note is that I do not have any systems of my own on this account. is this required?

however, when I send the request, I keep getting

Unauthorized 401: Invalid System ID

I have tried this for multiple sites on the ladder.
Any help or suggestions are appreciated!

Nevermind, I guess the issue was that I did need my own sid, so I added a system and now the calls work! keeping this up for anyone that might have a similar question.