Answer: AWS Lambda:The provided execution role does not have permissions to call DescribeNetworkInterfaces on EC2

answer re: The provided execution role does not have permissions to call DescribeNetworkInterfaces on EC2

Feb 13 '19

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This error is common if you try to deploy a Lambda in a VPC without giving it the required network interface related permissions ec2:DescribeNetworkInterfaces, ec2:CreateNetworkInterface, and ec2:DeleteNetworkInterface (see AWS Forum).

For example, this a policy that allows to deploy a Lambda into a VPC:

{
  "Version": "2012-10-17",

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