Updating the documents through the Ingest Pipeline

Is there any way to update documents using the ingest pipeline?

We are trying to ingest documents using a custom API through the Ingest pipeline. We are looking to identify the duplicate records. We used the "fingerprint" processor, so that will help us not index duplicate documents. At the same time, if the document is already indexed, I want to update the document fields. We are not able to figure out how to update the document using the ingest pipeline.

Thanks in advance.

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