A delivery is one event with two records
The driver hands over, the storekeeper receives, and each writes into their own system at a different hour of the day.
WHY THE COUNT DIVERGES
The balance is maintained twice.
Every movement is a two-party event with a moment where both are present and agree. That agreement is then written down separately by each of them, and begins drifting immediately.
Returns are the worst of it
Goods collected on a Thursday, credited the following month, and recorded by the store the day someone remembered.
Nobody is lying and both are wrong
Two honest records of the same events will diverge, because they were made by different people from different vantage points.
The dispute is never worth the time it costs
Eleven units is too small to escalate and too frequent to ignore, which is exactly why it never gets fixed.
If you consign stock, or hold it.
What is worth most is the shape of your month end: how long it takes and what you usually disagree about.
ratna.dewi@saldotitipan.online
Makassar, Sulawesi Selatan