Remember that when you run in API Explorer, you are logged in as you and uses your roles/permissions for the call. When you use a Data Action, it is based on the OAuth that is setup in the Integrations that the data action is running under. You should check the OAuth for the roles assigned and make sure it has access to conversation details like your user.
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Robert Wakefield-Carl
TTEC Digital, LLC fka Avtex Solutions, LLC
Contact Center Innovation Architect
https://www.Avtex.comhttps://RobertWC.Blogspot.com------------------------------