Question: The context in which we use word "deficiency" is inspection. Let's say, I look at your gas furnace and file a deficiency report describing some component or part.

What would the opposite of "deficiency" in this context? What would I call the "report" that certifies that your gas furnace is working well?

Thanks!

Answer: 
For home inspections, the opposite of "deficiency" might vary from "barely satisfactory" to "state of the art". To simplify an approval rating, one might title the column "approved" or, to comply with legal issues, **"up to code"**.
Ah, given your elaboration in the comments, I think I see what you're requesting now: a title for a category of statements/fields in a software interface, to complement "deficiencies" and to mean "things which have not been found to be deficient during this inspection".

In that case, I would use a term like **approvals**, as the inspector is clearly either *approving* of some feature or is marking it as a deficiency. It's not strictly speaking an antonym, as approval implies a person making a value judgment while deficiency implies a problem regardless of the presence of a person, but it seems to be the type of word you're looking for here.