Negative account level reserve

Hey. I’ve been selling on Amazon here and there for a couple years. Recently I’ve been selling a lot and noticed that I have a -$3,700 account level reserve. What exactly does this mean? The products I sell are quite profitable so I don’t see how I could possibly owe Amazon anything especially when I have a $6,000 automatic deposit coming out in a few days. Anyone encounter this or know what this negative account level reserve even means? Appreciate any input!