logCustom

Property Manager name: Log Custom Details
Behavior version: The v2026-01-09 rule format supports the logCustom behavior v1.1.
Rule format status: GA, stable
Access: Read/Write
Allowed in includes: Yes

Logs custom details from the origin response in the Log Delivery Service report.

Option Type Description Requires

Option	Type	Description	Requires
`logCustomLogField`	boolean	Whether to append additional custom data to each log line.		{"displayType":"boolean","tag":"input","type":"checkbox"}
`customLogField`	string (allows variables)	Specifies an additional data field to append to each log line, maximum 1000 bytes, typically based on a dynamically generated built-in system variable. For example, `round-trip: {{builtin.AK_CLIENT_TURNAROUND_TIME}}ms` logs the total time to complete the response. See Support for variables for more information. Since this option can specify both a request and response, it overrides any `customLogField` settings in the `report` behavior.	`logCustomLogField` is `true`	{"displayType":"string","tag":"input","type":"text"} {"if":{"attribute":"logCustomLogField","op":"eq","value":true}}

logCustomLogField

boolean

Whether to append additional custom data to each log line.

{"displayType":"boolean","tag":"input","type":"checkbox"}

customLogField

string (allows variables)

Specifies an additional data field to append to each log line, maximum 1000 bytes, typically based on a dynamically generated built-in system variable. For example, round-trip: {{builtin.AK_CLIENT_TURNAROUND_TIME}}ms logs the total time to complete the response. See Support for variables for more information. Since this option can specify both a request and response, it overrides any customLogField settings in the report behavior.

logCustomLogField is true

{"displayType":"string","tag":"input","type":"text"}

{"if":{"attribute":"logCustomLogField","op":"eq","value":true}}