I have InvokeHTTP processor scheduled as CRON and it runs more then once every day , this is how cron has been scheduled 0 0 16 * * ?

[#1]

we are using nifi 1.3 version, and running the invokeHTTP process, we are using get method and getting the JSON file. everything is working fine, but it is running multiple times, So yesterday the app ran multiple times and generated around 130 mails.

[#2]

Verify the space and format and characters in the cron, may be some special characters spoiling the format.