Thanks for catching those issues.For the first item, maybe you could submit pull request at GitHub - CiscoDevNet/ydk-gen: Generate model-driven APIs from YANG models ydk-gen repository, or we could do this for you.

Codec executes local encoding/decoding:./cd-encode-xr-ifmgr-cfg-11-ydk.py  # <-- no need for credentials

ydk.errors.YPYServiceProviderError: Parent is not set.                     Parent Hierarchy cannot be determinedIt seems like it complains about missing key value for L2VpnOper.L2VpnForwarding.Nodes.Node. Maybe an issue related to #399.A related disc...