Try each of the following steps in order until the error is resolved:
  1. Use a constituent query and export rather than a gift or relationship query and export
  2. On the General tab of the Export, click Export only constituents marked 'Head of Household' under the 'Head of Household' Processing. This will eliminate both Spouses being exported.
  3. Recreate the export
  4. Export from either Mail or Export. Do not export directly from Query
  5. Validate the database [version 7] ensure integrity of data
  6. Search for duplicate constituents and merge them (The Raiser's Edge 7 only)