Urent plese?tan registration in traces (step 4) (income tax)

Dear Experts,

I am facing a problem while creating a password (Step 4) during TAN No
Registration process in www.tdscpc.gov.in (TRACES website) as per guidelines in
the said website, I have given alpha-numeric and one upper case alphabet, in
spite of all these, website shows Invalid password. (minimum characters 8 and
max 15 characters specified for password).

Advance Thanks