10 August 2011
I am getting problem with downloading form no. 16A from NSDL site. I am receiving the following error "Please specify valid challan / transfer voucher details" though I have correctly entered all the details.
11 August 2011
There is an option "Challan Status Enquiry" in tin.nsdl.com website to verify the challan details. Select "CIN Based View" and enter the challan detials to know whether that challan is updated in nsdl records or not.
Hope this will helpful to verify the details you are entering is correct or not.