Thanks. I think I should follow your good advice. There is no escape from this. But, to enhance my knowledge, I came across a notification of Maharashtra state govt regarding the amendment in stamp duty act dated 24.04.15. In that they had mentioned as follows in point no - (17) for Article 28, the following Article shall be substituted, namely:- “28. CUSTOMS BOND OR EXCISE BOND, Five hundred that is to say, any bond given pursuant to the rupees.”; provisions of any law for the time being in force or to the directions of any officer of Custom or Excise for, or in respect of, any of the duties of Customs or Excise or for preventing frauds or evasions thereof or for any other matter or thing relating thereto". Further, in the minutes of RAC meeting for quarter ending June 2015 held on 30.07.2015 held in the Office of the Chief Commissioner of Central Excise & Customs, Pune Zone, 41-A, ICE House, Sassoon Road, Pune - 411001 - in the issue no 3 it was discussed regarding this amendment and, the RAC members were of the opinion that "Stamp Act is applicable only to bonds and not to LUT. In view of the divergent opinions, it has been decided to refer the matter to the legal Section of CBEC, New Delhi for issuing necessary clarifications".
I hope experts will rethink in this issue and throw some light.