This may occur if the Acknowledgee is not linked before processing a donation.

To link the Acknowledgee prior to processing:
  1. Click on the Donation
  2. Click on the Tribute section
  3. Click on the Acknowledgee box
  4. Click F6 to create a new relationship to link to or F7 to find an existing record to link to the Acknowledgee
  5. After selecting the Acknowledgee click OK
  6. At this point you should be able to process the transaction.

    If you still receive the message when trying to process the transaction, chat with Support and reference this article. Include a screenshot of the Link Tribute Information window for the transaction for which you are seeing the error message.