Nobody ever questioned it because they never used it ... they just wanted it.
The reality is its is only used for collection actions. Offices will claim “the law requires it” to be submitted. Or “insurance requires it” or “we need it to verify you are who you say you are”. All crap.
621-31-1920 (6-21-3-11-9-20)
Nobody ever questioned it because they never used it ... they just wanted it.
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From retired computer programmer pov, the first thing I would do is strip all special characters from the string, check the count of digits remaining, and post error if not 10. So you really don’t know whether they used it or not.