diff --git a/lib/charms/sdcore_nms_k8s/v0/sdcore_config.py b/lib/charms/sdcore_nms_k8s/v0/sdcore_config.py
index ebc7816..5411236 100644
--- a/lib/charms/sdcore_nms_k8s/v0/sdcore_config.py
+++ b/lib/charms/sdcore_nms_k8s/v0/sdcore_config.py
@@ -106,10 +106,10 @@ def _on_sdcore_config_relation_joined(self, event: RelationJoinedEvent):
 import logging
 from typing import Optional
 
-from interface_tester.schema_base import DataBagSchema  # type: ignore[import]
+from interface_tester.schema_base import DataBagSchema
 from ops.charm import CharmBase, CharmEvents, RelationBrokenEvent, RelationChangedEvent
 from ops.framework import EventBase, EventSource, Handle, Object
-from ops.model import Relation
+from ops.model import ModelError, Relation
 from pydantic import BaseModel, Field, ValidationError
 
 # The unique Charmhub library identifier, never change it
@@ -120,7 +120,7 @@ def _on_sdcore_config_relation_joined(self, event: RelationJoinedEvent):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 1
+LIBPATCH = 3
 
 logger = logging.getLogger(__name__)
 
@@ -150,7 +150,7 @@ class SdcoreConfigProviderAppData(BaseModel):
 
 class ProviderSchema(DataBagSchema):
     """The schema for the provider side of the sdcore-config interface."""
-    app: SdcoreConfigProviderAppData
+    app_data: SdcoreConfigProviderAppData
 
 
 def data_is_valid(data: dict) -> bool:
@@ -163,7 +163,7 @@ def data_is_valid(data: dict) -> bool:
         bool: True if data is valid, False otherwise.
     """
     try:
-        ProviderSchema(app=data)
+        ProviderSchema(app_data=SdcoreConfigProviderAppData(**data))
         return True
     except ValidationError as e:
         logger.error("Invalid data: %s", e)
@@ -207,7 +207,7 @@ class SdcoreConfigRequirerCharmEvents(CharmEvents):
 class SdcoreConfigRequires(Object):
     """Class to be instantiated by the SD-Core config requirer charm."""
 
-    on = SdcoreConfigRequirerCharmEvents()
+    on = SdcoreConfigRequirerCharmEvents()  # type: ignore
 
     def __init__(self, charm: CharmBase, relation_name: str):
         """Init."""
@@ -336,4 +336,7 @@ def set_webui_url_in_all_relations(self, webui_url: str) -> None:
             raise RuntimeError(f"Relation {self.relation_name} not created yet.")
 
         for relation in relations:
-            relation.data[self.charm.app].update({"webui_url": webui_url})
+            try:
+                relation.data[self.charm.app].update({"webui_url": webui_url})
+            except ModelError as exc:
+                logger.error("Error updating the relation data: %s", str(exc))