Hello Lukasz,
Please provide us with more details such as:
1 - Are these AAP license you are looking at transferring?
2 - Confirm that both are NX5500 controllers
3 - Is the other controller a replacement unit, is it a new unit?
4 - Do you want to affect a partial or complete transfer of licenses?
5 - If using both controllers, will they be configured in a cluster?
6 - What is the purpose of the license transfer?
Christoph S.