The configuration of 18-digit UDIN is as under.18-Digit UDIN – YY-MMMMM-ZZ-NANANANAN.YY – Last two digits of current year (2 digits).MMMMM – Membership Number of CMAs (5 digits).ZZ - Code for Ministry (2 digits).NANANANAN – Alpha Numeric Random Number generated by system (9 digits).1920371ZZSBGI4NCRO – Sample UDIN