diff --git a/src/openeo_aggregator/partitionedjobs/crossbackend.py b/src/openeo_aggregator/partitionedjobs/crossbackend.py
index f585e42..124b2be 100644
--- a/src/openeo_aggregator/partitionedjobs/crossbackend.py
+++ b/src/openeo_aggregator/partitionedjobs/crossbackend.py
@@ -46,6 +46,8 @@
 
 # Some type annotation aliases to make things more self-documenting
 SubGraphId = str
+NodeId = str
+BackendId = str
 
 
 class GraphSplitException(Exception):
@@ -380,11 +382,6 @@ def run_partitioned_job(pjob: PartitionedJob, connection: openeo.Connection, fai
     }
 
 
-# Type aliases to make things more self-documenting
-NodeId = str
-BackendId = str
-
-
 @dataclasses.dataclass(frozen=True)
 class _FrozenNode:
     """