In my experience, something that says K-1 adjustment usually pertains to a prior-year carryforward, and is often some, but not all, of the proper adjustment amount.

When you get a lot of K-1s, particularly the very complicated K-1s, you kind of have to figure out the right answer and force Lacerte to get there, rather than assuming that if you key all the numbers into boxes, Lacerte will generate a completely accurate return.

For all of your 2018 and 2019 K-1s, you have an Oklahoma K-1 showing identical amounts in both the Federal and Oklahoma columns? I'd eyeball particularly hard the K-1 that shows a $1 difference between federal and state K-1 income, because of the -1 = 0 issue.

It's only $20, so worst case scenario, poke around until you can force it to zero.