Anyone run into this error before trying to write data to ArcGIS Online with the writer (applyEdits)? In this instance, this came from ArcGIS Data Interop running on ArcGIS Server.
{"code":1000,"description":"The request limit has been reached. Contact esri support for assistance."}
(Also cross posted on the esri community)
Check the Writer Settings there is a settings called "Features Per Request" - by default this is set to 1000. Some services (I think) limit the number of features per request. To confirm this you can do a test where you set this to just 1. If it still fails then this isn't the issue.
What you want to know is the max features per request you can use. You can either find someone who knows or you can experiment until you find the max.