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I am using JSON based Solr schema to create custom indexes in Sitecore V10.2 docker. After rebuilding my custom index, I am getting following error :

Missing uniqueKey id field

Although, when I checked the fields in the custom index collection, id field is already present. If I try to override/create it again, I am getting duplicate field error message.

Can anyone help me out please !!

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You can update the schema from Solr URL. Select the Solr collection and you'll get a option called schema. From there you can update the fields.

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You can get more detail from below URL-

https://solr.apache.org/guide/7_0/schema-api.html

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Please check the managed-schema file within your custom SOLR core.

This can be located for example here on SOLR VM:

E:\solr-8.4.0\server\solr\CUSTOM_CORE_NAME\conf

This file should begin like this:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Solr managed schema - automatically generated - DO NOT EDIT -->
<schema name="default-config" version="1.6">
  <uniqueKey>_uniqueid</uniqueKey>

If it does not start as above, then i suspect that you have not populated mananaged schema. This can be done by navigating to the control panel and clicking the link Populate Managed Schema.

NEXT SUGGESTION: Check your custom core config file. Is index all fields set to true?

< indexAllFields >true</ indexAllFields >

If not then you need to manually add the field.

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  • My managed-schema file looks like this : ``` <?xml version="1.0" encoding="UTF-8"?> <!-- Solr managed schema - automatically generated - DO NOT EDIT --> <schema name="default-config" version="1.6"> <uniqueKey>id</uniqueKey> ``` I am using Solr in cloud mode & running inside solr-container in docker. So I don't have access to managed-schema file. I don't even have conf folder under my custom core folder. All I have is data folder under which there are 3 folders (index, snapshot_metadata & tlog) & core.properties file which has metadata about the core.
    – Anvay
    Commented Jan 31, 2022 at 13:52
  • Ok. Please see can you share your custom core sitecore config file? See new suggestion in answer below.
    – Dean OBrien
    Commented Jan 31, 2022 at 21:15

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