Shortfall
ahd-5
noun.
A failure to attain a specified amount or level; a shortage.
noun.
The amount by which a supply falls short of expectation, need, or demand.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
An instance of not meeting a
quota
or of having an insufficient amount.
noun.
The amount by which a quota is missed; the amount missing.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the property of being an amount by which something is less than expected or required