diff --git a/metadata_backend/api/handlers/submission.py b/metadata_backend/api/handlers/submission.py
index 85f0ce6d6..715a58ede 100644
--- a/metadata_backend/api/handlers/submission.py
+++ b/metadata_backend/api/handlers/submission.py
@@ -310,7 +310,7 @@ async def put_submission_path(self, req: Request) -> Response:
             JSONValidator(submission, "submission").validate
             for file in data:
                 if "accessionId" not in file:
-                    reason = f"Updating {submission_id} failed files requires accessionId."
+                    reason = f"Updating {submission_id} failed. Files require an accessionId."
                     LOG.error(reason)
                     raise web.HTTPBadRequest(reason=reason)
                 _file_accessionId = file.pop("accessionId")
@@ -396,7 +396,7 @@ async def delete_submission_files(self, req: Request) -> Response:
 
         Body needs to contain a list of accessionId for files.
 
-        :param req: POST request with metadata schema in the body
+        :param req: DELETE request
         :returns: HTTP No Content response
         """
         submission_id = req.match_info["submissionId"]
diff --git a/metadata_backend/database/db_service.py b/metadata_backend/database/db_service.py
index d3bd0ac35..143d367b2 100644
--- a/metadata_backend/database/db_service.py
+++ b/metadata_backend/database/db_service.py
@@ -269,7 +269,7 @@ async def remove(self, collection: str, accession_id: str, data_to_be_removed: U
         :param accession_id: ID of the object/submission/user to be updated
         :param data_to_be_removed: str or JSON representing the data that should be
         updated to removed.
-        :returns: JSON after remove if operaation was successful
+        :returns: JSON after remove if operation was successful
         """
         id_key = self._get_id_key(collection)
         find_by_id = {id_key: accession_id}
@@ -314,7 +314,7 @@ async def append(
         :param data_to_be_addded: str or JSON representing the data that should be
         updated to removed.
         :param upsert: If the document does not exist add it
-        :returns: JSON after remove if operaation was successful
+        :returns: JSON after remove if operation was successful
         """
         id_key = self._get_id_key(collection)
         find_by_id = {id_key: accession_id}