ArcGIS Online Feature Service Writer – Error 409: Item already exists

I am working on an FME workflow to read data from SQL Server, perform some data manipulation, and then update an existing ArcGIS Online Feature Service.

I am using the ArcGIS Online Feature Service Writer in FME.

During the translation, I am getting the following error:

ArcGIS Online Feature Service Writer: Encountered an unexpected error.
The error code from the server was '409' and the message was:
'Item 'tmpf_t06kco.zip' already exists.'

Details: ''

ARCGISONLINEFEATURES writer: An error has occurred.
Check the logfile above for details.

I noticed that FME appears to be creating/uploading a temporary .zip/File Geodatabase item in ArcGIS Online.

My intended workflow is:

SQL Server
    ↓
FME Data Manipulation
    ↓
Existing ArcGIS Online Feature Service
    ↓
Insert / Update / Delete / Upsert

I do not want to create a new Feature Service on every run. The Feature Service already exists in ArcGIS Online, and my goal is to refresh/update the existing layer.