if priority == 0 {
		// there is more than one envoy filter that uses the same name where the proxy version
		// is set and the priority is not set and a relative operator is used.  Issue a warning
		message := msg.NewEnvoyFilterUsesRelativeOperation(r)

		// if the proxyVersion is set choose that error message over the relative operation message as
		// the proxyVersion error message also indicates that the proxyVersion is set
		count := 0

	return diag.NewMessage(
		ExternalNameServiceTypeInvalidPortName,
		r,
	)
}

// NewEnvoyFilterUsesRelativeOperation returns a new diag.Message based on EnvoyFilterUsesRelativeOperation.
func NewEnvoyFilterUsesRelativeOperation(r *resource.Instance) diag.Message {
	return diag.NewMessage(
		EnvoyFilterUsesRelativeOperation,
		r,
	)
}