TOP > When You Are in Trouble > Messages for Provisioning Errors When SOS (SATO Online Services) is Enabled (SOS users only) Messages for Provisioning Errors When SOS (SATO Online Services) is Enabled (SOS users only) A provisioning error occurs if authentication with the server fails while adding the product to SOS. The messages differ depending on the cause. Check the following countermeasures, and then take appropriate action. To clear the error:Press the button or button. • Normally, it is not necessary to restart the product.Return CodeMessageCountermeasure400RetCode:400 Failed sending data. Please set the SOS Mode to Disabled, and then set it again.If resetting the SOS mode does not resolve the error, contact your nearest SATO reseller.403RetCode:403 Unauthorized. Please set the SOS Mode to Disabled, and then set it again.If resetting the SOS mode does not resolve the error, contact your nearest SATO reseller.405RetCode:405 Unknown Model.Contact your nearest SATO reseller.406RetCode:406 This serial has not been registered for use with SOS. Please check the registration.Confirm the registration with the administrator of your SOS account.407RetCode: 407 There is a problem with the proxy server settings. Please check the settings.If changing the proxy settings does not resolve the error, confirm with your administrator.408RetCode: 408 HTTPS request timed out.Confirm the proxy settings or the network communication status.If the error occurs even if the communication status is normal, contact your nearest SATO reseller.409RetCode:409 No serial number is registered with this printer. Please check the settings.Contact your nearest SATO reseller.500RetCode:500 SOS system error. Please contact the help desk.A system error has occurred with the SOS or the proxy server. Wait for a while and contact your nearest SATO reseller if the error cannot be resolved.503RetCode:503 SOS Server Maintenance.Cannot be used during maintenance. Please wait until the maintenance is finished.-Unknown error. Please contact the help desk.Wait for a while and contact your nearest SATO reseller if the error cannot be resolved. Back to top