The production system will already have the default key block range allocation of group 3, range 2. However, every other system that is going to be in the same system landscape as the production system must also have a unique key block range allocation. So, these allocations need to be decided on and assigned. Note that in making the allocations to the other systems, the key block range group 3 range 2 should be avoided as this has already been assigned to the production system. Please refer to section 5.3.2 - Key Block Ranges for a description of the process involved in assigning key block ranges.