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I have an error message: ArcGIS Online Feature Service Writer: Encountered an unexpected error. The error code from the server was '400' and the message was: 'Cannot perform operation. Invalid operation parameters.'. Details: ''deletes' parameter is invalid, Input string was not in a correct format.' ARCGISONLINEFEATURES writer: An error has occurred. Check the logfile above for details

I have checked the log file but honestly I am not sure what I am looking for. Attached is the logfile and my AGOL service format.

Thanks

Hello @scottshenberger, thanks for posting! Confirming we are updating an existing feature service? Also, can you confirm you have the correct permissions to perform inserts/updates/deletes to the target feature class? For example, are you able to delete records from the feature service directly in AGOL?

It might be beneficial to share a copy of your workspace as well. Happy to help, Kailin. 

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