Getting Error E00007 - User authentication failed due to invalid authentication values

[CC95]

I am using the Android inperson SDK and keep receiving this error when I try to complete a transaction. I've looked into the sample app code and do not see any part where they specify a transaction key or api login ID when completing the transaction. Am I missing something or does the inperson sdk not need that specified?

Should I be logging in with my transaction key and api login id rather than my username and password to the merchant account instead?

Thanks!

[CC95]

Just in case anyone is having this same issue - I figured it out. It turns out the processor in our card reader only detects swipes and I had to set the terminal mode to swipe only. With chips it just gave that vague error of invalid credentials. Hope this helps someone!