Technical Tip: 'Entry not found' when configuring explicit proxy firewall policy
To configure an explicit proxy firewall policy:

See the following error 'Entry not found'.

Try to create the policy using CLI:
# config firewall explicit-proxy-policy
edit
set uuid 5fe08756-0e1d-51e7-225b-24447f910a2fc
set proxy ftp
set dstintf "port1"
set srcaddr "all"
set dstaddr "all"
set action accept
set schedule "always"
next
end
set proxy web
end
Attribute 'service' MUST be set.
Command fail. Return Code -56
Solution
This error can appear because there is no 'web proxy' service defined:

Configure through CLI the next command:
# config firewall service custom
edit "webproxy"
set explicit-proxy enable
set category "Web Proxy"
set protocol ALL
set comment ''
set color 0
set visibility enable
set iprange 0.0.0.0
set fqdn ''
set tcp-portrange 0-65535:0-65535
next
endNow, policy can be created without any problem.

