Entering SC drivers license document number

[Bob S6]

We moved from NY to SC.  I entered all the info from our new SC drivers licenses but it's asking for the first three characters of my drivers license document number.  The "How do I find this" refers to a NY drivers license.  What do I enter?

[Bob S6]

Oops.  I had checked the NY block.  I fixed it.  Never mind.