index="********" message_type =ERROR correlation_id="*" | eval err_field1 = spath(_raw,"response_details.body") | eval err_field2 = spath(_raw,"response_details") | eval err_field3 = spath(_raw,"error") | eval err_field4 = spath(_raw,"message") | eval err_final=coalesce(err_field1,err_field2,err_field3,err_field4) | table err_field1 err_field2 err_field3 err_field4 err_final i have the fields populating for err_field3 and err_field4.. but its not populating in the err_final. Attached the screenshot for reference
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