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update last_updated guidance
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healthedata1 committed Mar 20, 2024
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Expand Up @@ -88,8 +88,8 @@ Servers that can accurately populate [`Meta.lastUpdated`](#) **SHOULD** support
<div class="stu-note" markdown="1">
Many servers are unable to populate the `Meta.lastUpdated` element accurately. However,
they **SHOULD** expose a method for clients to know if there are new or modified resources since their last polling time and advertise that mechanism in their CapabilityStatement. Work is in progress to:
- Define an alternative search parameter that provides similar functionality. (see FHIR-45012 - Extension for tracking changes in facade contexts).
- Enable Subscriptions for notifications on relevant events as an alternative to search polling.
- Define an alternative FHIR search parameter that provides similar functionality. (see FHIR-45012 - Extension for tracking changes in facade contexts).
- Enable [FHIR Topic-Based Subscription](#) for notifications on relevant events as an alternative to search polling.
</div><!-- stu-note -->

</div><!-- new-content -->
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