Unknown content type "application/edi-tradacoms"

When setting a content type, that is not known, on a format type. Link throws this error during initialization:

Bizbrains.Link.Base.Exceptions.LinkException: Unknown content type "application/edi-tradacoms"
   at Bizbrains.Link.Initialize.Base.LinkInitializeStepBase.RaiseError(ILinkMessage message, LinkException linkException) in /home/vsts/work/1/s/Bizbrains.Link.Initialize/Bizbrains.Link.Initialize/Base/LinkInitializeStepBase.cs:line 156
   at Bizbrains.Link.Initialize.Base.LinkInitializeStepBase.HandleException(ILinkMessage message, Exception ex, Action`1 unknownExAction) in /home/vsts/work/1/s/Bizbrains.Link.Initialize/Bizbrains.Link.Initialize/Base/LinkInitializeStepBase.cs:line 133
   at Bizbrains.Link.Initialize.Base.LinkInitializeStepBase.Execute(IEnumerable`1 messages, CancellationToken cancellationToken) in /home/vsts/work/1/s/Bizbrains.Link.Initialize/Bizbrains.Link.Initialize/Base/LinkInitializeStepBase.cs:line 89
   at Bizbrains.Link.Initialize.LinkMessageInitializer.InitializeMesssage(ILinkMessage interchangeMessage, CancellationToken token) in /home/vsts/work/1/s/Bizbrains.Link.Initialize/Bizbrains.Link.Initialize/LinkMessageInitializer.cs:line 79