The specified standard CP (CPU), IFA (zAAP), SUP (zIIP), CPU or core was reconfigured either online or offline to match the initial number of configured logical standard CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores set for the logical partition. The initial numbers are set on the Processor Page of the Customize Activation Profiles task on the Hardware Master Console or Support Element for your machine.

The initial numbers are checked during z/OS initialization.

• If the initial number is not zero, the system uses it to determine how many logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores should be online.
• If the initial number is larger than the number of logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores that are currently configured, the system will reconfigure online enough logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores to make up the difference. The system does the reconfiguration by processing logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPU, or cores that are currently in standby state, from low address to high address.
• If the initial number is smaller than the number of logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores that are currently configured, the system will reconfigure offline enough logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores to make up the difference. The system does the reconfiguration from high address to low, taking into consideration feature requirements of the logical CPs (CPUs), IFAs (zAAPs), SUP (zIIPs), CPUs or cores and skipping the required ones.