Error:
Failure | Error Code 21916013:
ShortMessage - This Token has been revoked by App.
LongMessage - This Token has been revoked by App. The end user must complete the Auth & Auth consent flow again to generate a valid token.
This error now surfaces on the Channels → Errors report page instead of as a static error string. To view it:
- Go to Channels → Errors.
- Select the tab for the affected channel (e.g. eBay).
- Use the date filter to narrow the results to the relevant time period.
- Toggle between All Results, Only Errors, and Only Warnings to isolate error code 21916013.
The error will display with the same ShortMessage and LongMessage text described below.

Explanation and resolution:
As outlined in the error message, above error would be triggered when the eBay token has either expired or has been revoked and you can take a look at this guide and you would be able to see the steps you can follow in order to re-authorize the instance and generate a new and valid token.
Note: Any orders that were placed on eBay, but weren't synced and imported into SureDone will sync within 24 hours of the token re-authorization and this goes back 2 weeks.