Section h10 additional information: the investigation was completed by conducting a thorough evaluation of the product and the reported information.The issue was found to be in the interface of the linac which displays the following message to the user: "ratm interface initialization failed".In the issue reported this message was ignored by the user, and the usual treatment/ workflow was attempted.Upon attempting the usual treatment/ workflow, the couch move assistant displayed the device interface error window.The user then restarted the linac, mosaiq sequencer pc, iview pc and the xvi pc.After restarting, the error messages were then not shown, and the treatment commenced.The system inhibits safely by displaying two error messages which shows that the interface has failed: one error message will be displayed in mosaiq and a second error message will be displayed in the couch move assistant.Mosaiq did not have any malfunction and is working as designed and intended.There was no patient mistreatment.
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