If you want to import documents into multiple document types within a single XML Index DIP process, you need to ensure that each Document Type has its own tag that can be used to identify the start of a document.
In addition, a Document Type should not be a subset of another Document Type. Following are simple examples of incorrectly and correctly formatted XML Import Index Files for using multiple Document Types within an XML Index DIP process. <Document 1> symbolizes one Document Type and <Document 2> symbolizes another Document Type.