diff --git a/services/api/blocksim_ratelimiter.go b/services/api/blocksim_ratelimiter.go
index 6e22fc32..2b1bebf3 100644
--- a/services/api/blocksim_ratelimiter.go
+++ b/services/api/blocksim_ratelimiter.go
@@ -172,6 +172,9 @@ func SendJSONRPCRequest(client *http.Client, req jsonrpc.JSONRPCRequest, url str
 	}
 
 	if res.Error != nil {
+		if res.Error.Data != nil {
+			return res, nil, fmt.Errorf("%w: %s (%v)", ErrSimulationFailed, res.Error.Message, res.Error.Data)
+		}
 		return res, nil, fmt.Errorf("%w: %s", ErrSimulationFailed, res.Error.Message)
 	}
 	return res, nil, nil