c9d52612f24a40229c45f7d20e754121
It keeps asking me to fit a versatile Onyx on my belt. There was that gem already installed. I tried fitting a new Versatile onyx into the slot but it doesn’t recognise it.
In this case, the change that it wants you to make is the chosen effect on the DISC belt. The gem would have a green highlight around it if it wanted you to change the gem. The entire row in the result table is not faded out if it wants you to change the item (or in this special case, change to a different variant of the item).