i was sued and got judgement but..

i was sued for a debt and the ca got a default judgement against me 2 years ago..i just got judgement vacated due to ints contradictory to my state laws with the assistance of my attorney general...this was premarital debt of spouses...is there any fair debt collection practices violations here? can they(ca) just sue you as the spouse w/out any paperwork to legally tie me to the debt? Is there a violation in doing do?????