Validating resources against a custom FHIR IG

[Olga Patterson]

Hey, all. 

Has anyone tried to deploy US Core or another custom FHIR IG on a GCP FHIR Server? We are trying to do that but get an error that in part reads:

```

412 Precondition Failed
POST https://our_fhir_store/fhir
{
"issue": [
{
 "code": "invariant",
 "details": {
 "text": "in slice \\"race\\": expected field type to match one of: Extension(http://hl7.org/fhir/us/core/StructureDefinition/us-core-race)"
 },
"diagnostics": "in https://<Custom_FHIR_IG>/custom-patient-profile|0.1.0",
"expression": [
        "Bundle.entry[0].resource.ofType(Patient).extension" ],
 "severity": "error"},

```

In patient resource the race extension looks like this:

``` {

"extension": [

{

"url": "ombCategory",

"valueCoding": {

"code": "2028-9",

"display": "Asian",

"system": "urn:oid:2.16.840.1.113883.6.238",

"version": "v1"

}

}

],

"url": "http://hl7.org/fhir/us/core/StructureDefinition/us-core-race"

},

```

Any idea what exactly is expected in the resource so that it would pass FHIR IG validation? Is there something we need to configure in the FHIR store? Or populate the extension differently?

Thanks!

[Mirek Korwel]

Hi. 

I'm not sure if that's it, our implementation did accept the patient resource with race slice like in your example; however further validation test had thrown this error: Patient.extension[0]: Extension.extension:text: minimum required = 1, but only found 0 (from http://hl7.org/fhir/us/core/StructureDefinition/us-core-race). In other words, the text extension {"url": "text", "valueString": "Asian"} is the required one. Coding extension may be added (actually, up to 5 of those), but is not required.

I hope that helps. If not, then I have no idea - the coding extension itself looks ok.

Best regards

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Mirosław Korwel

Application Developer

Foothold Technology

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[Nik Klassen]

It looks like Mirek is right, the us-core-race extension requires a "text" extension on the extension. There's also an example in the spec http://hl7.org/fhir/us/core/STU5.0.1/Patient-example.json.html

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[Olga Patterson]

Thank you very much. I will test it out.

[Olga Patterson]

Thank you very much - you were absolutely right. We were missing the value for text. I knew it was something simple like that but I just could not see it until you pointed it out.

Thank you!

On Mon, Dec 12, 2022 at 10:10 AM Nik Klassen <nikkl...@google.com> wrote:

[Mirek Korwel]

You're welcome!