The mystery of the non-editable zip code values

I finally fixed something that has been bugging me for a while now. When adding new addresses in our GIS database, certain zip code values (owner zip only) from out of state would be kicked out. It happened to me today so I decided to look at the properties of the fields in the database. It turns out that field was set up as a short integer. Now short integers (unsigned ones) allow values from -32,768 to 32,767 so a zip code of 34465 (the one I just tried) is out of range.

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