NameUnavailabilityReason type
The reason that an artifact signing account name could not be used. The Reason element is only returned if nameAvailable is false.
KnownNameUnavailabilityReason can be used interchangeably with NameUnavailabilityReason,
this enum contains the known values that the service supports.
Known values supported by the service
AccountNameInvalid: Account name is invalid
AlreadyExists: Account name already exists
type NameUnavailabilityReason = string