Same field name in Incident & Service Catalog when running reports

Same field name in Incident & Service Catalog when running reports

We're trying to run reports on "All Requests" which includes Incidents and Service Catalog items.  Both templates have user-defined fields with identical names (i.e, planned completion date) but when we run reports, the fields are often empty when they clearly contain content within the request.  Is it possible to have identical field names in both and still run reports?

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