We export data from Zen Cart, but are having problems where people populate fields like phone numbers with excessive digits / text.

eg. "(01) 2345 6789 or if no answer (02)987654321"

Is it possible to limit this to, say, just 12 numeric digits?

Same in address - "123 Anywhere St or PO BoxXXX"

-maybe have this limited to a specific number of alpha characters?

TIA