This document shows how to get the Immutable (unchangable /Unique) company id of a successfactors system.
You would find it in Provisioning system -> Under Company Settings.
Short Note: This is a company id which cannot be changed and is unique, used for SF internal purposes while making database related operations.
SF engineering may need this id while troubleshooting a particular issue.
KBA , LOD-SF-INT , SF Integrations - EC Payroll, Boomi/ HCI, API , How To