Chapter 7 Firewall : Security policies : Firewall policies : UUID Support
  
UUID Support
Universally Unique Identifier (UUID) attributes have been added to policies to improve functionality when working with FortiManager or FortiAnalyser units. If required, the UUID can be set manually through the CLI.
CLI Syntax:
config firewall {policy/policy6/policy46/policy64}
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set uuid <example uuid: 8289ef80-f879-51e2-20dd-fa62c5c51f44>
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end