Error while provisioning services - NSO 5.5.2.9 - M7 - Python cb_validate error. 'Container' object has no attribute 'interfaces' STATUS_CODE: TSDN-L2VPN-409 REASON: Dynamic class method for device not found CATEGORY:: Hi,NSO: 10.56.116.240 (nso/Public1234!) version: 5.5.2.9 M7. This server was working fine with real devices previously.Deleted all old devices and loaded a new topology in CNC. Got Devices added to NSO alsoall went fine. but while trying to configure , facing error as attached.attached error message.attached payloads.
 Hi,NSO: 10.56.116.240 (nso/Public1234!)version: 5.5.2.9 M7.This server was working fine with real devices previously.Deleted all old devices and loaded a new topology in CNC. Got Devices added to NSO alsoall went fine. but while trying to configure a service ( l2vpn p2p ) , facing error as attached.attached error message.attached payloads.Please provide all the information mentioned (device type/version , logs ) in the release notes: when testing is that when an interface in no shut and there is no description. Then show run will not show and NSO wouldn't have this interface in NSO.the interfaces which was listing and in shutdown also having the same issue. It throws error while provisioning services for that interface. when the interface is configured with no-shut with some description ., after sync-from, payload is working to provision the services.Had debug with Linh and found the below things which was added in previous comment.As confirmed with the reporter , issue is fixed after updating the interface and doing the sync-from .