The delivery note and the goods receipt diverge
One goes into the distributor's system, the other into the pharmacy's, and eleven months later they differ by two months.
Which batch and when it arrived are known with certainty at the moment the box changes hands, when a driver and a pharmacist are standing on either side of it.
One goes into the distributor's system, the other into the pharmacy's, and eleven months later they differ by two months.
Both are honest records made by different people at different times, and there is no third version to settle it.
Time spent reconciling is time the stock spends getting closer to expiry, which eventually ends the question.
Writing it off beats chasing it, and the cost surfaces later in what patients pay.
Early design work, with nothing running anywhere. The most useful thing you can send is your real rejection reasons and roughly what a year of write-offs comes to.