AWSTemplateFormatVersion : '2010-09-09' Transform: AWS::Serverless-2016-10-31 Description: Invalid template with bad layer intrinsic. Parameters: LayerVersion: Default: 1 Type: String Resources: LayerBadInstrinsic: Type: AWS::Serverless::Function Properties: Handler: layer-main.handler Runtime: python3.9 CodeUri: . Timeout: 20 Layers: - "arn:aws:lambda:us-west-2:111111111101:layer:layerDoesNotExist:${LayerVersion}"