diff --git a/lib/galaxy/model/__init__.py b/lib/galaxy/model/__init__.py
index d423c65e1216..aab572045fd4 100644
--- a/lib/galaxy/model/__init__.py
+++ b/lib/galaxy/model/__init__.py
@@ -5979,11 +5979,8 @@ def to_dict(self, view="collection"):
 
 
 class LibraryDatasetDatasetAssociation(DatasetInstance, HasName, Serializable):
-    message: Mapped[Optional[str]] = mapped_column(TrimmedString(255))
-    tags: Mapped[List["LibraryDatasetDatasetAssociationTagAssociation"]] = relationship(
-        order_by=lambda: LibraryDatasetDatasetAssociationTagAssociation.id,
-        back_populates="library_dataset_dataset_association",
-    )
+    message: Mapped[Optional[str]]
+    tags: Mapped[List["LibraryDatasetDatasetAssociationTagAssociation"]]
 
     def __init__(
         self,