First the universe is defined, then it is measured, then it is built. A sample is pulled and read before the full run is committed. Anything that could not be filled is stated plainly rather than padded.
Address normalisation
Standardising location data before comparison, so one place does not read as several.
Industry mapping
Translating described activity into the classification your systems already use, including where it fits badly.
Manual review queue
Setting aside the cases a rule cannot settle, for somebody to look at.
We will tell you the ceiling before you commit to anything beneath it.