Rest-API (Transaction Security Broker)API Specificationv1Synchronous Key OperationsBlock a keyBlock a key POST /v1/synchronousBlock Create a synchronous (non-SKA) block request. Blocking a key is only supported if the key has smart key attributes. Request Responses200400403404500501Successful OperationClient ErrorRequest refusedResource not foundServer ErrorImplementation ErrorWas this helpful?Get started withCloudHSM for free.Need help?Contact Support.Other questions?Ask Sales.