<OperationOutcome>
  <id value="22daadee-26e1-4d6a-9e6a-7f4af9b58877" />
  <issue>
    <severity value="error" />
    <code value="value" />
    <details>
      <coding>
        <system value="https://fhir.nhs.uk/CodeSystem/England-SpineErrorOrWarningCode" />
        <code value="INVALID_VALUE" />
        <display value="Invalid value" />
      </coding>
    </details>
    <diagnostics value="Invalid NHS Number" />
  </issue>
</OperationOutcome>