Enrich Processor - If the fields do not match


I am using enrich processor to enrich some fields from the already existing Index in elasticsearch.

The problem is, if the enrich processor does not find any match, it skips the document.
I want to ingest both matched and unmatched documents into elastic search.

Please let me know whether this is possible. If yes, then please guide me.

Can you please provide a fully reproducible example (including data, mapping, configuration, ES version)? I just tried this locally and it works for me, but I may have gone through different setup steps.