This page is part of the FHIR Bulk Data Access (Flat FHIR) (v2.0.0: STU 2) based on FHIR R4. This is the current published version. For a full list of available versions, see the Directory of published versions
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If the client explicitly asks for export of resources that the Bulk Data server doesn't support, or asks for only resource types that are outside the Patient Compartment, the server SHOULD return details via a FHIR <code>OperationOutcome</code> resource in an error response to the request. When a <code>Prefer: handling=lenient</code> header is included in the request, the server MAY process the request instead of returning an error.</p>\n<p>For example <code>_type=Observation</code> could be used to filter a given export response to return only FHIR <code>Observation</code> resources.</p>\n</div></td></tr><tr><td>IN</td><td>_elements</td><td>0..*</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#string\">string</a></td><td/><td><div><p>Experimental - support is optional for a server and a client.</p>\n<p>String of comma-delimited FHIR Elements.</p>\n<p>When provided, the server SHOULD omit unlisted, non-mandatory elements from the resources returned. 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When a <code>Prefer: handling=lenient</code> header is included in the request, the server MAY process the request instead of returning an error.</p>\n</div></td></tr><tr><td>IN</td><td>includeAssociatedData</td><td>0..*</td><td><a href=\"http://hl7.org/fhir/R4/datatypes.html#code\">code</a></td><td><a href=\"ValueSet-include-associated-data.html\">http://hl7.org/fhir/uv/bulkdata/ValueSet/include-associated-data</a> (Extensible)</td><td><div><p>Experimental - support is optional for a server and a client.</p>\n<p>String of comma-delimited values.</p>\n<p>When provided, a server with support for the parameter and requested values SHALL return or omit a pre-defined set of FHIR resources associated with the request.</p>\n<p>A server that is unable to support the requested <code>includeAssociatedData</code> values SHOULD return an error and a FHIR <code>OperationOutcome</code> resource so the client can re-submit a request that omits those values (for example, if a server does not retain provenance data). 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FHIR search response parameters such as <code>_include</code> and <code>_sort</code> SHALL NOT be used.</p>\n<p>A server that that is unable to support the requested <code>_typeFilter</code> queries SHOULD return an error and a FHIR <code>OperationOutcome</code> resource so the client can re-submit a request that omits those queries. When a <code>Prefer: handling=lenient</code> header is included in the request, the server MAY process the request instead of returning an error.</p>\n</div></td></tr></table></div>"
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