Canadian postal codes have A0A 0A0, some people put the space, some people do not. Some people capitalize, some people do not, but our postal codes are not case or space sensitive. If people are on a mobile device usually the first letter is capitalized but the rest are not.

Your system requires I calculate every permutation of spacing and capitalization on my own, and manually remove every postal code to put in a new set of postal codes, any time I want to change someone.

A change thus takes hours of work, when this can be resolved with just a few lines of code.