Http 413 error in Kong is not getting reported to New Relic

Hello Team,

I am having the below configuration in the nginx-kong.conf
error_page 400 404 408 411 412 413 414 417 494 /kong_error_handler
All the errors other than 413 is getting reported to New Relic. Is there any other configuration needed to catch this particular error ?

Please help me guide in this.