Q: What does the ERR error on the File Exchange Sync Chrome Extension mean?
A: Most commonly, on the chrome extension, if there was no new data from sku grid at the time that upload to eBay is scheduled to occur or if you manually click upload to eBay, you'll see "some upload processes have failed" as there was nothing to upload at that time along with ERR on the extension. This will go away once check changes is run either automatically or manually again, there are new changes received from Sku Grid, and upload to eBay has run again either automatically or manually.