How can I get rid of the message stating to "enter previous sync Samsung account"?

[Sexydark]

I just recently found one of my old Samsung phones I had to bypass the Samsung account frp because I forget what Samsung account I had I was wondering how to get rid of the message please enter previous sync Samsung account and change it with my new Samsung account 

[Cicastillo29]

Have you tried factory resetting the phone and logging into your current Samsung account?

[realaud]

You would have to remember the previous Samsung account that the phone was registered to, then sign it out of that account and sign it into your new one.  This is an anti-theft measure Samsung has long had on their phones.  What is the model of the old phone?  Why would you have more than one Samsung account?  Unless you mean you had a different email address when you first signed into that phone.