This section covers the use case where the devices have a preexisting configuration which may have been configured either through Embedded Fabric/CLI/EFA or some out-of-band means.
When devices with preexisting configuration are added to EFA, fabric service performs certain validations before adding devices to the EFA fabric. If any of the configuration that is retrieved from the devices does not fall under the fabric settings range, an error is displayed. You can perform corrective actions to add such devices to the EFA fabric.