Known issues Sent data could not be applied onto this device Symptoms When saving a device an error occures saying: " Sent data could not be applied onto this device ", see also the example below: Affected CoCoS version(s)  - CoCoS v5.1.0 Solved in CoCoS version: Not yet solved Details When saving a device, the error "Sent data could not be applied onto this device" is displayed. When opening the logMessage by clicking the link " Click here for more details ", the service info/comments of the message give errors about fields like "intercomDialPlanParam006Name", "intercomDialPlanParam006Method",, "intercomDialPlanParam006Value", "intercomDialPlanParam006IdTag", "intercomDialPlanParam007Name", "intercomDialPlanParam007Method",, "intercomDialPlanParam007Value", "intercomDialPlanParam007IdTag", "intercomDialPlanParam008Name" and so on. See also the example below: Application This issue happened when an "invalid" amount of "intercomDialPlanParameters" was configured. Solution / Resolution / How To Navigate to " System " -> " Configuration " to get to the list of configuration variables for the system. Search for the configuration variable  dialPlanParameterLimit Make sure the value is set to 20   end hit [ Enter ] to save the value. After updating the configuration variable, it should be possible to save devices again. References Related Git issues: