In the Do's & Donts - you said use your maiden name and in the text you said women irresepective of marital status must give their father's name. You are not clear there. The correct position is, women need not give their maiden name, they can give their changed famly name / surname if they so want. But they should give their father's full name. In our country usually they give option of father / husband's name in case of ladies. Whereas IT Dept does not accept husband's name. Father's name has to be mentioned whereever required.