The fastest way to lose trust in a system is to find two totals that disagree. That usually happens when each module keeps its own version of the truth and a report tries to stitch them together at month-end.
We chose one ledger that every module posts into. A sale reduces stock and creates the receivable in the same step, so the stock report and the balance sheet can never tell different stories.
Try this now: pick one sale from last week and follow it through your stock count and your accounts. If you have to look in two places, that is the gap a single ledger closes.