diff --git a/src/runtime/error.rs b/src/runtime/error.rs
index 0072ca449f2d0d940ad49d0341c745f5c40cf978..672a3d6554cb00feecfe4579beed4fbe9111c55b 100644
--- a/src/runtime/error.rs
+++ b/src/runtime/error.rs
@@ -1,15 +1,21 @@
 use crate::common::*;
 
+#[derive(Debug)]
 pub enum EndpointError {
     MalformedMessage,
     BrokenEndpoint,
 }
+#[derive(Debug)]
 pub enum TryRecyAnyError {
     Timeout,
     PollFailed,
     EndpointError { error: EndpointError, index: usize },
     BrokenEndpoint(usize),
 }
+#[derive(Debug)]
 pub enum SyncError {
     Timeout,
+    NotConnected,
+    InconsistentProtoComponent(ProtoComponentId),
+    IndistinguishableBatches([usize; 2]),
 }