It should be DPWL..
DPWL means Duty Pass Waiting List. This doesn't concern common travellers and it is meant for the people working in Indian Railways.
please wait...Translate to HindiYeh DPWL hona chahiye..
DPWL ka matlab hota hai Duty Pass Waiting List. Isse aam yatriyon ko koi lena dena nahi hai, ye bas Indian Railways mein kaam karne wale logon ke liye hota hai.