diff --git a/orchestration/flows/bl832/alcf.py b/orchestration/flows/bl832/alcf.py
index 0f5479f..1ce7bf4 100644
--- a/orchestration/flows/bl832/alcf.py
+++ b/orchestration/flows/bl832/alcf.py
@@ -643,6 +643,11 @@ def process_new_832_ALCF_flow(folder_name: str,
         # Step 4: Schedule deletion of files from ALCF, NERSC, and data832
         logger.info("Scheduling deletion of files from ALCF, NERSC, and data832")
         nersc_transfer_success = False
+        # alcf_transfer_success = True
+        # alcf_reconstruction_success = True
+        # alcf_tiff_to_zarr_success = True
+        # data832_tiff_transfer_success = True
+        # data832_zarr_transfer_success = True
 
         schedule_pruning(
             alcf_raw_path=f"{folder_name}/{h5_file_name}" if alcf_transfer_success else None,
diff --git a/orchestration/flows/bl832/prune.py b/orchestration/flows/bl832/prune.py
index de70751..44b87be 100644
--- a/orchestration/flows/bl832/prune.py
+++ b/orchestration/flows/bl832/prune.py
@@ -1,6 +1,7 @@
 import logging
 from prefect import flow, get_run_logger
 from prefect.blocks.system import JSON
+from typing import Union
 
 from orchestration.flows.bl832.config import Config832
 from orchestration.globus.transfer import GlobusEndpoint, prune_one_safe
@@ -12,7 +13,7 @@
 def prune_files(
     relative_path: str,
     source_endpoint: GlobusEndpoint,
-    check_endpoint: GlobusEndpoint = None,
+    check_endpoint: Union[GlobusEndpoint, None] = None,
     config=None
 ):
     """
@@ -47,7 +48,7 @@ def prune_files(
 def prune_spot832(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -62,7 +63,7 @@ def prune_spot832(
 def prune_data832(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -76,7 +77,7 @@ def prune_data832(
 def prune_data832_raw(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -90,7 +91,7 @@ def prune_data832_raw(
 def prune_data832_scratch(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -104,7 +105,7 @@ def prune_data832_scratch(
 def prune_alcf832_raw(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -118,7 +119,7 @@ def prune_alcf832_raw(
 def prune_alcf832_scratch(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
@@ -132,7 +133,7 @@ def prune_alcf832_scratch(
 def prune_nersc832_alsdev_scratch(
         relative_path: str,
         source_endpoint: GlobusEndpoint,
-        check_endpoint: GlobusEndpoint,
+        check_endpoint: Union[GlobusEndpoint, None] = None,
         config=None,
 ):
     prune_files(
diff --git a/orchestration/globus/transfer.py b/orchestration/globus/transfer.py
index de07afe..812d83d 100644
--- a/orchestration/globus/transfer.py
+++ b/orchestration/globus/transfer.py
@@ -5,7 +5,7 @@
 import os
 from pathlib import Path
 from time import time
-from typing import Dict, List
+from typing import Dict, List, Union
 from dotenv import load_dotenv
 from globus_sdk import (
     ClientCredentialsAuthorizer,
@@ -243,7 +243,12 @@ def task_wait(
 
         if task["nice_status"] in ["FILE_NOT_FOUND"]:
             transfer_client.cancel_task(task_id)
-            raise TransferError("Received FILE_NOT_FOUND, cancelling task")
+            raise TransferError(f"Received FILE_NOT_FOUND, cancelling Globus task {task_id}")
+
+        if task["nice_status"] in ["PERMISSION_DENIED"]:
+            transfer_client.cancel_task(task_id)
+            raise TransferError(f"Received PERMISSION_DENIED, cancelling Globus task {task_id}")
+
     return True
 
 
@@ -252,7 +257,7 @@ def prune_one_safe(
     if_older_than_days: int,
     tranfer_client: TransferClient,
     source_endpoint: GlobusEndpoint,
-    check_endpoint: GlobusEndpoint,
+    check_endpoint: Union[GlobusEndpoint, None],
     max_wait_seconds: int = 120,
     logger=logger,
 ):
diff --git a/scripts/polaris/tiff_to_zarr.py b/scripts/polaris/tiff_to_zarr.py
index 6aad60a..ece85ce 100644
--- a/scripts/polaris/tiff_to_zarr.py
+++ b/scripts/polaris/tiff_to_zarr.py
@@ -63,7 +63,7 @@ def main():
         last_part = os.path.basename(os.path.normpath(tiff_dir))
         zarr_dir = os.path.abspath(os.path.join(tiff_dir, '..', last_part + '.zarr'))
     if not os.path.exists(zarr_dir):
-        os.makedirs(zarr_dir)
+        os.makedirs(zarr_dir, mode=0o2775, exist_ok=True)
 
     print('Output directory: ' + zarr_dir)
 
@@ -80,6 +80,10 @@ def main():
     # Set permissions for the output directory and its contents
     set_permissions_recursive(zarr_dir)
 
+    # Extract and set permissions for the parent directory (folder_name)
+    parent_dir = os.path.abspath(os.path.join(tiff_dir, '../'))  # Extract parent directory
+    set_permissions_recursive(parent_dir)  # Set permissions for parent directory
+
 
 if __name__ == "__main__":
     main()