1. The Court Case Number should be assigned at the beginning of the case, upon the filing of the accusatory instrument, during, or as soon after arraignment as possible, and prior to any reporting of information to other agencies.
2. The Unified Court System recommended format is alphanumeric with:
a. the first four digits for the year the case was initiated in court
b. six digits for a sequentially assigned case number starting over at the beginning of the new year
c. two digits to identify co-defendants
d. three digits for internal court use