"putelasticsearchhttp" Elasticsearch returend code 400 with message bad request

[#1]

Dear Experts,

I want to transfer data from NiFi to Elasticsearch using the PutElasticsearchHTTP processor. However, I am encountering the error "Elasticsearch returend code 400 with message bad request" The setup, which I have depicted in the image below, was working previously. How should I resolve this problem?

Regards

[#2]

@Arash Did you inspect the flowfile (assure its the expected format, etc) and inspect the flowfile attributes (may be more detail into the conflict).   Additionally, you can set the processor log level to DEBUG and/or monitor the nifi-app.log for more details.      If this worked before, and now doesnt,  i would expect something to have changed in the flowfile.