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Workaround: the bug is fixed in master branch, get a copy of /service/vfc/nfvo/catalog/catalog/pub/utils/toscaparser/basemodel.py and update it in vfc_catalog container.
Issue 2: Failed to create VL between VNFs in VFC due to multivim call failure
Workaround: Remove VLs from vEPC and vIMS service design.