I would like to know if OnlyOffice has a retry functionality when handling the callback interface we set up. I have noticed that in my own project, sometimes the download of the diff.zip fails when receiving the save command from OnlyOffice. In such cases, I return an error to OnlyOffice. However, it seems that OnlyOffice does not make another call to the callback interface in this situation
As far as I understand, you need this parameter: Configuring ONLYOFFICE Docs Developer Edition - ONLYOFFICE
Please try to change this parameter (do not forget to restart all Document server services after changing default.json file) and check out the result.
thanks for your reply