How would you apply incentives to things like not providing (any/the propper) documentation for something you bought using the company card? This seems to be q

How would you apply incentives to things like not providing (any/the propper) documentation for something you bought using the company card? This seems to be quite easy to do for bad code; you just have them rewrite it. But especially for the things that are not a persons primary work it feels like "apply incentives better" is more easily said than done.