Today was launch day for my first large-scale systems build.
In typical fashion for me, instead of starting at the beginning of the story, I’m going to start with launch day itself. I’ll work backward later and chronicle the build process and the various roadblocks that showed up along the way.
Today was met with both struggles and successes.
The QuickBooks Online integration code itself was solid. Connections worked, authentication worked, and most of the core functionality behaved exactly as expected. My custom link plugin — which queries QuickBooks and attaches all of our projects and invoices to our user data inside the new CRM — worked flawlessly on the first run.
That part felt great.
But the first real push of data immediately revealed some edge cases.
The first issue we ran into was that pushing updates to QuickBooks could detach previously recorded payments from invoices. Not ideal. After some investigation, I built in additional safeguards and blocking logic to prevent that scenario from occurring again.
Problem solved.
Then came the real beard-twister.
For almost three hours, pushes to QuickBooks kept failing with a cryptic error. Eventually we tracked it down to a surprisingly simple edge case: companies with an apostrophe in the name were crashing the QuickBooks query. I kept trying to fix it with the wrong syntax because QuickBooks expects a slightly different query format than I assumed.
To make matters even more entertaining, our bookkeeper happened to have entered the company name with a rogue period at the end as well.
So we had:
- an apostrophe
- a period
- incorrect query syntax
- and QuickBooks being very particular about how it parses names
That combination turned into a truly ball-crushing debugging session.
Eventually we tracked it down, corrected the syntax handling, and added the necessary safeguards.
In the words of the great Dwight Schrute:
“This was a successful unveiling.”
Tomorrow I’ll start documenting how this system actually came together — from the original idea, to the architecture, to the many things that broke along the way.