The Rental Property was owned by a brother and sister and sold in 2022 for a total of $230K.

Each owner was issued a 1099-S for the full amount of the Proceeds $230K.

Where is the adjustment made on the 4797 for the co-owner's cost and gain on sale?

Is it form 4797 part III line 21 or is there a different way? Used the asset entry for and entered it in disposition asset gain or loss basis.

Thank you!