How to equate two different structures in unicode system R/3 4.7 ??

Hi All,

We are undergoing through non-unicode to unicode conversion in 4.7.

While correcting programs i have come across error code MESSAGEG!2 , which says

"RECORD_TAB" and "ZHTLPRJ" are not mutually convertible. In Unicode programs, "RECORD_TAB" must have the same structure layout as "ZHTLPRJ".

In my code I have this statement, RECORD_TAB = ZHTLPRJ.

where RECORD_TAB -> structure (SEAHLPRES)

ZHTLPRJ -> ztable

How to equate two different structures in unicode conversion environment?

Please help me out to resolve this issue..

Many Thanks

Priya