You need to use a custom policy definition, because there is not a built-in policy and Resource Lock is an irrelevant solution. Reference: https://docs.microsoft.com/en-us/azure/azure-policy/policy-definition https://docs.microsoft.com/en-us/azure/governance/policy/samples/built-in-policies https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/lock- resources?tabs=json