After RPC request (i.e. add-lsp) is sent, ODL-PCEP infinitely waits for response (PCRpt/PCErr) with SRP object,
If peer sends an error message without SRP object and only error object, in this scenario ODL does not have any data to map to the response, the RPC request will be in the waiting mode infinitely.

Can there be any logic so that RPC request does not infinitely wait in such scenarios and have some time-out.

If applications other than postman or yang UI implements time-out logic then we will not observe this problem.