If you have the 2002 returns or access to them get the returns to a Tax attorney or CPA to review. Also bring the notice from the FTB.
I wonder if you do not know what this is about if you were married and that your spouse either had a 2002 tax issue or made an innocent or injured spouse claim. Did you or your spouse have a business in the early 2000s that you subsequently sold?
Since the notice says it is for informational purposes only this is the time to figure out what occurred.
First question: did you, in fact, provide a withholding allowance certificate to your employer in 2002 that contained wrong information? Second, did you contest any taxes from 2002 before the FTB or any other government agency? Third, did you file a return for 2002 that was "frivolous" - i.e., contained false deductions, or you failed to report income, or you took a position that you weren't subject to tax for some reason?
If so, then you should definitely gather up whatever documents you have from 2002 and consult with a competent local tax attorney who has experience handling tax disputes with the FTB (not all tax attorneys do).
If you didn't do any of those things, then I would suggest looking at the notice to see if there is a telephone number you can call for additional information, and that you call the number to ask for an explanation about the notice.
My answer does not constitute legal advice and may not be relied upon by anyone for any purpose and does not constitute an attorney/client relationship or an offer to form such a relationship. This disclaimer is intended to be fully compliant with the requirements of Treasury Department Circular 230 and the terms thereof are fully incorporated by reference. If you wish to consult with me please contact me at dana@nytaxcounsel or visit my website at www.nytaxcounsel.com