Mothers maiden name while registering dsc on mca website

Amit Mittal (CA) (43 Points)

21 October 2014  
II an unable to register a DSC on MCA site, it requires mother's maiden name. I have tried all the possible combinations and its permutations but it still gives below error:
Details provided do not correspond to the DIN/DPIN. Please ensure that the entered details are as per the DIN/DPIN application.You may contact the company wherein you are a director/designated partner/authorised representative in case you do not have your DIN/DPIN application details
 
Kindly suggest how to set right.
 
Thanks in advance for your help