Finally, I got the solution.
As the Ti module is using the old version of libPayPalMPL.a, which reference uniqueIdentifier.
I tried to download the very new version(UDID problem fixed) libPayPalMPL.a from paypal github, and built the Ti module with this, then used that Ti module for my project.
Thanks Paypal Support Team modified quickly for libPayPalMPL.a and thanks for all replies in this post.