Serverless-framework expects the values at

vpc.securityGroupIds

&

vpv.subnetIds

to be Arrays. The easier solution is just wrap your

${ssm:...}

calls in `[]`'s So for example:

vpc:
  securityGroupIds: [${ssm:terraform-output/$self:provider.stage}/vpc/security-groups/default/id/value}]
  subnetIds: [${ssm:terraform-output/$self:provider.stage}/vpc/subnets/private/ids/value}]

tried didnt work 😞

Hey @Ram Ganesan just so you're aware this is the SST community - not the serverless-framework community

Resolved by adding ~splits at the end