insufficiency
US /ˌɪn.səˈfɪʃ.ən.si/
UK /ˌɪn.səˈfɪʃ.ən.si/

1.
the quality of being inadequate or insufficient
:
•
The insufficiency of funds led to the project's delay.
•
There was an insufficiency of evidence to convict him.
the quality of being inadequate or insufficient