PDR1667W
<FIELD> fieldname should not contain a <fieldref> because it is a <DOCUMENT> specification. It has been corrected.
What happened: The field you are using to define the top or bottom of a document contains a <FIELDREF> tag. This tag is obsolete. EngageOne™ Enrichment internally defines a <reference> for this field and continues processing.
What to do: Redefine the field used with the <DOCUMENT> tag so that it contains a <REFERENCE> tag instead of a <FIELDREF> tag.