Enrich existing elasticsearch index with new fields from logstash

Elastic Stack Logstash
1

hi ,
if any one know if i can and how to receive for the first time a log in logstash filter it then save it in ES , next step is to receive another type of logs filter it then add its fields to the first one saved in ES using an ID or sthing
thanks a lot !!

2

Please don't post the same thing multiple times - Enrich-existing-elasticsearch-index-with-new-fields-from-logstash