fiat punto 188 1,2 60 immobilizer problem

Hello people I have a fiat punto 188 1.2 60 where the immobilizer makes me ready so for history had a motor damage so I removed the motor and replaced it with a 1.2l with 131000 km at the start attempt at once key from the immobilizer lights up so only organ organ but no start so then I connected my lapi and my software tells me then U1600 – immobilizer; wrong key code – Continuously I only have one single closure l for my ignition lock so I want to relearn the key but then I did not find the code card my question is now at ebay there are new keys with ignition lock for 35 euro and new ID48 transponder Crypto glass for 9 euro the transponders are uncoded how can I code this code what do I need everything to do mfg daniel