diff --git a/jupiterone/client.py b/jupiterone/client.py
index 7fefb7b..a8da0ba 100644
--- a/jupiterone/client.py
+++ b/jupiterone/client.py
@@ -5,7 +5,7 @@
 
 import json
 from warnings import warn
-from typing import Dict, List
+from typing import Dict, List, Union
 from datetime import datetime
 import time
 
@@ -13,7 +13,6 @@
 import requests
 from requests.adapters import HTTPAdapter, Retry
 from retrying import retry
-from typing import Union, List
 
 from jupiterone.errors import (
     JupiterOneClientError,
@@ -703,7 +702,10 @@ def update_integration_instance_config_value(
             instance_config["data"]["integrationInstance"]["config"] = config_dict
 
             # remove externalId to not include in update payload
-            del instance_config["data"]["integrationInstance"]["config"]["externalId"]
+            if "externalId" in instance_config["data"]["integrationInstance"]["config"]:
+                del instance_config["data"]["integrationInstance"]["config"][
+                    "externalId"
+                ]
 
             # prepare variables GraphQL payload for updating config
             instance_details = instance_config["data"]["integrationInstance"]
@@ -726,12 +728,18 @@ def update_integration_instance_config_value(
             }
 
             # remove problem fields from previous response
-            del variables["update"]["pollingIntervalCronExpression"]["__typename"]
+            if variables["update"].get("pollingIntervalCronExpression") is not None:
+                if "__typename" in ["update"]["pollingIntervalCronExpression"]:
+                    del variables["update"]["pollingIntervalCronExpression"][
+                        "__typename"
+                    ]
 
-            for ingestion_source in instance_details["ingestionSourcesOverrides"]:
-                ingestion_source.pop(
-                    "__typename", None
-                )  # Removes key if it exists, ignores if not
+            ingestion_sources = instance_details.get("ingestionSourcesOverrides", None)
+            if ingestion_sources is not None:
+                for ingestion_source in instance_details["ingestionSourcesOverrides"]:
+                    ingestion_source.pop(
+                        "__typename", None
+                    )  # Removes key if it exists, ignores if not
 
             response = self._execute_query(
                 UPDATE_INTEGRATION_INSTANCE, variables=variables