Reject links
The Complex Flat File connector can have a single reject link, whether you use the connector as a source or a target.
For CFF source connectors, reject links are supported only if the source file contains a single record type without any OCCURS DEPENDING ON (ODO) columns. For CFF target connectors, reject links are supported only if the target file does not contain ODO columns.
You cannot change the selection properties of a reject link. The Selection tab for a reject link is blank.
You cannot edit the column definitions for a reject link. For writing files, the reject link uses the input link column definitions. For reading files, the reject link uses a single column named "rejected" that contains raw data for the columns that were rejected because they did not match the schema.