In My Case Cause of below the issue at storage level.
failing currently due to LVM inconsistency
Below screenshot where CRS services are running on another node.
iocp0 is now available on pdb02
Ref: AIX 18.104.22.168 Installation Fails with “rtld: 0712-001 Symbol CreateIoCompletionPort was referenced ” (Doc ID 1949184.1)