<OperationOutcome xmlns="http://hl7.org/fhir">
  <id value="notfound" />
  <issue>
    <severity value="error" />
    <code value="not-found" />
    <details>
      <coding>
        <system value="http://fhir.synapxe.sg/api-operation-outcome" />
        <code value="E-10001" />
      </coding>
      <text value="Patient NRIC is not found" />
    </details>
  </issue>
</OperationOutcome>