Automation command key in RuleConstraints (what's it for?)

I’m writing an import/export tool and have a question about the key the accompanies the rule constraints when a rule is triggered by an automation command executed event.

e.g.

[{"L":"AutomationCommandName","N":"VVSsXeJivj","O":"Equal","R":"Gift"}]

For the string “VVSsXeJivj”, is this used or checked anywhere else? Should I generate a different sequence on export or is it safe to leave as-is?

TIA