Conversational subflows and actions support a limited number of input data types. To be compatible with conversational interfaces, an action or a subflow must only include inputs that use supported data types.

ServiceNow AI Platform data type name	Workflow Studio data type label
array.string	Array of Strings
boolean	True/False
calendar	Calendar Date/Time
choice	Choice
date	Date
datetime	Date/Time
document_id	Document ID
date_time	Date/Time
due_date	Due Date
email	Email
glide_date	Date
glide_time	Time
glide_date_time	Date/Time
GUID	Sys ID (GUID)
html	HTML
integer	Integer
long	Long
longint	Long Integer String
reference	Reference
schedule_date_time	Schedule Date/Time
string	String
string_full_utf8	String (Full UTF-8)
table_name	Table Name