Have I been Discriminated at work?

I work for a large company, and with the Unions help, I requested a reasonable accommodation, I have a problem with organization and routine. My accommodation for a consistent schedule, basically working 1st shift only, wasba great help.

One of the other things, was that Mgmt helped me reorganize my work truck. Once again another great help. However, it was mentioned that after is was reorganized, it was my responsibilty to keep it in order.

Since the rearrangement, I have been "written up" for having a messy truck a few times, while no one else that I work with, had even had their trucks inspected, and I had been getting a few compliments of how well I kept it, wasn't perfect, wasn't a disaster, but it was possibly a few empty boxes.

Main question, I had an accommodation for a condition that was medically verified from my doctor. But the only reason i had the reorganization, was because of my accommodation for disability, which was then more scrutinized than any other truck at my Location.

Basically out of 15-20 trucks, mine was the only one scrutinized, while others overflowed with trash and Disarray. I would post pictures if I could.

So since I got written up for my truck while other trucks weren't even inspected, is it Discrimination?

Sorry about too much info