Error on "Incremental Process Data with Synchronize Defaults" Rule when Run by User

Summary:

I have set up a form to run the "Incremental Process Data with Synchronize Defaults" on save. It works fine when I save the form to run the rule (as the service admin), but it fails to run when a user saves the form to run the rule, even when I have granted the user access to launch the rule. Does anyone know why the rule works for admins but not users? Do the process data rules not work for users?

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