A reasonableness check is a finance control that asks a simple question of a number: does this make sense given everything we know. Rather than verifying a figure to the cent, it tests whether an amount is plausible against context, history, and expectations, and flags what looks off for a closer look.
It is one of the most common everyday controls in finance. A payroll run that jumps 30 percent with no new hires, a utility bill ten times last month's, a margin that suddenly doubles: each passes basic data validation but fails the smell test. Reasonableness checks catch errors that are technically valid but practically wrong.
The catch is that doing this well means comparing each figure against the right baseline, consistently, across thousands of lines. Humans do it intuitively on the items they happen to look at, and miss the rest.
Phacet applies reasonableness systematically. The agent that checks payroll consistency flags payroll figures that do not hold together, the agent that checks ERP, CRM, and billing consistency catches mismatches across systems, and the budget versus actual agent surfaces amounts that deviate from plan. Every flag exposes its reasoning through a native audit trail.
A reasonableness check is judgment applied to numbers. Phacet scales that judgment across every line, so the implausible gets caught wherever it hides, not just where someone happened to look.
