When you are converting a large EDI document to an IData object, you should process the document iteratively, segment by segment. To do so, set the iterator input parameter of the convertToValues service to true. Setting iterator to true causes the convertToValues service to process just a segment or a group of segments of the document at a time. The convertToValues service determines how many segments to process based on the flat file structure information in the flat file schema for the EDI document.

For more information about processing EDI documents iteratively, see Processing the Document Iteratively, Segment by Segment.