Migration From HP Unix 11.11 to 11.31

[Madan]

i'm facing some problem to make my source code work in HP Unix 11.31 which works fine in HP Unix 11.11. Recently our unix server is upgraded to HP Unix 11.31, i was able to compile my source code successfully in 11.31 but i see some system call failure and socket failure.

is there any steps to be followed while converting HP Unix 11.11 to 11.31.

Any help is appreciated.

thanks