If when sending a communication you get the error "Unable to deliver the submission to at least one recipient", this response indicates that the submission cannot be made by a whistleblower or complainant since there is no recipient configured, or the recipient is not active (has not accessed the environment for the first time).

That is, at least one recipient user must have been selected in the main context and must have accessed the management environment; otherwise, and for security reasons, the request cannot be sent.

To fix this, you need to add a person as a recipient , and they must log in before trying to forward the communication.