This index pipeline stage performs a Solr atomic update on an existing document using data pulled from the current document being processed by the pipeline.

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Configuration

When entering configuration values in the UI, use unescaped characters, such as \t for the tab character. When entering configuration values in the API, use escaped characters, such as \\t for the tab character.
In the Find Related Document (RTG) field, enter the Solr query to look up the related document to update using a real-time GET request. The query needs to uniquely identify the document to be updated in an id=<value> format. For more information, see the Solr’s RealTime Get documentation. In the Find Related Document (Query) field, enter the Solr query to look up the related document to update. Only the first document returned in the results is used. The query can contain any field:<value> and needs to uniquely identify the document to be updated. The id:<value> field is one example.