Wrongful interference with a contractual relationship requires that there is a valid contract between two parties, a third party who knows the contract exists. Interference with an existing contractual relation occurs when a third party interferes with an existing contract between 2 parties.Wrongful interference with a contractual relationship requires the existence of ___, third party ____, and ____. Wrongful or tortious interference with contracts happens when a thirdparty intentionally causes a contracting party to commit a breach of contract. Wrongful interference with a contractual relationship requires the existence of , third party , and. Tortious interference occurs when a third party disrupts an existing or prospective business relationship between two or more other parties. Arizona recognizes the tort of intentional interference with business expectancies.