Own product, Brik

An invoice total that appeared 100 times too small.

A 450,000-naira line item appeared as 4,500 in Brik’s mobile invoice composer. I found the mistake while checking the invoice screen.

What was happening

One part of the app held amounts in naira, while another expected kobo. The two parts of the product were using different units for the same value, so the displayed total was wrong by a factor of 100.

What changed

I made both parts use the same calculation, including how amounts are converted and rounded. I added checks for the original amount, different quantities, several invoice rows, rounding, and incomplete or invalid entries.

Why it matters for a launch

A payment or invoice journey can look finished in a demo while a small mismatch changes the amount a customer sees. The useful work was finding the one disagreement, making the rule shared, and testing the cases that could quietly bring it back.

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