What is DSC? How to validate it?

Parayil (Secretary) (96 Points)

21 October 2011  

Dear Sir,

While filing MCA21 form No. 66  there was an error message for MCA21 that the Director is not authorised to sign this form. While going through the List of Sgnatories provided by MCA I found that DSC of the Director was expired on 11/11/2010. I would like to know what is the procedure for validating the DSC and What is DSC means?

Thanks & Regards

Ajith