I have activated the survey and created survey invitation link using apex and opened the invitation link into a new tab for community logged in user but the language of survey page is getting updated based on logged in user language. But in our scenario, we have to pull the language value from custom object and pass the language value into the invitation link URL.
So can anyone help me out to pass the language value into survey invitation link for loggedIn community user.

Greeting,

I currently have a customer portal running for external logins.

Is there/what would be the best way to test permissions on external users to be sure the individuals are seeing the expected data?

Would it be possible to create a report of a list of accounts that the invidual has visibility into?