Hta Charge Modified To By-law Charge (advice?)

Earlier today I received an offence notice in the city of Mississauga. Rather than a charge under HTA the officer issued a charge under City of Mississauga By-Law 555/2000. The correct By-Law is 555-00 so I'm wondering if this is a fatal error and/or an error that will allow me to have the charge withdrawn?

I certainly appreciate that the officer was looking to help me by charging the By-Law infraction rather than the HTA infraction. I'm curious if the officer intentionally wrote an incorrect By-Law so I could fight the offence notice and have it dismissed?

Any input and suggestions/assistance very much appreciated.

They mean the same thing. The absence of the first two digits won't change anything.

I think you have it backwards.

The By-Law on the books is 555-00 but the By-Law written by hand on the offence notice is 555/2000.

That would make them the same thing?

Edit: the latter (to me) looks like 555 out of 2000.

"555-00" and "555/2000" both mean By-Law Number 555, enacted in 2000.