diff --git a/package.json b/package.json
new file mode 100644
index 000000000000..bc38617ab0d6
--- /dev/null
+++ b/package.json
@@ -0,0 +1,8 @@
+{
+  "devDependencies": {
+    "@playwright/test": "^1.38.0"
+  },
+  "dependencies": {
+    "lint": "^0.8.19"
+  }
+}
diff --git a/src/dispatch/conversation/exceptions.py b/src/dispatch/conversation/exceptions.py
new file mode 100644
index 000000000000..d4b62bd49689
--- /dev/null
+++ b/src/dispatch/conversation/exceptions.py
@@ -0,0 +1,22 @@
+from dispatch.exceptions import DispatchException
+
+
+class ConversationUpdateException(DispatchException):
+    """Base exception for all errors related to updating conversations."""
+
+    pass
+
+
+class NoCaseConversationRelationException(ConversationUpdateException):
+    def __init__(self, case_id: int):
+        super().__init__(f"No relationship between case {case_id} and a conversation.")
+
+
+class NoIncidentConversationRelationException(ConversationUpdateException):
+    def __init__(self, incident_id: int):
+        super().__init__(f"No relationship between incident {incident_id} and a conversation.")
+
+
+class NoConversationPluginException(ConversationUpdateException):
+    def __init__(self, msg: str = None):
+        super().__init__("No conversation plugin enabled.")
diff --git a/src/dispatch/document/exceptions.py b/src/dispatch/document/exceptions.py
new file mode 100644
index 000000000000..8e71b91a57a0
--- /dev/null
+++ b/src/dispatch/document/exceptions.py
@@ -0,0 +1,12 @@
+from dispatch.exceptions import DispatchException
+
+
+class ConversationUpdateException(DispatchException):
+    """Base exception for all errors related to updating conversations."""
+
+    pass
+
+
+class NoDocumentRelationError(ConversationUpdateException):
+    def __init__(self, subject_id: int):
+        super().__init__(f"No relationship between subject {subject_id} and a document.")