Closing out Seller Carry loan - steps needed

[Nik Divakaruni]

Good Evening Fellow BPers,

I have a 35-unit property that I put 10% down on, and the seller carried the other 10%.  This is coming due next week.  

The seller is telling me that no legal work is needed once the funds are paid back to him, although I find that slightly odd.  I realize it's a note that has reached maturity, but I figured at least something should be done for us to close this out.

Any others here that have closed out a seller carry, and what steps were done at the very end to ensure all ends are tied off?

Any help you can give would be greatly appreciated.  Thanks!

Nik