IERC721 0.7.3 Check if owner has tokens in an external contract

1

I’m creating a new contract. But I want to create a function that first checks to see if the user has a specific tokenId in another ERC721 contract (that is already on the blockchain).

Is this possible? Any advice is appreciated

2

Yes, it is possible. All you need to do is to call ownerOf function in the other ERC721 contract via its interface and check if the returned address is the given user.