diff --git a/packages/syft/src/syft/client/datasite_client.py b/packages/syft/src/syft/client/datasite_client.py
index 895ec28a8c1..6d25959b9fa 100644
--- a/packages/syft/src/syft/client/datasite_client.py
+++ b/packages/syft/src/syft/client/datasite_client.py
@@ -26,6 +26,7 @@
 from ..service.dataset.dataset import CreateDataset
 from ..service.migration.object_migration_state import MigrationData
 from ..service.response import SyftError
+from ..service.response import SyftException
 from ..service.response import SyftSuccess
 from ..service.response import SyftWarning
 from ..service.sync.diff_state import ResolvedSyncState
@@ -146,6 +147,8 @@ def upload_dataset(self, dataset: CreateDataset) -> SyftSuccess | SyftError:
                     res = twin._save_to_blob_storage(allow_empty=contains_empty)
                     if isinstance(res, SyftError):
                         return res
+                except SyftException as se:
+                    return SyftError(message=f"{se}")
                 except Exception as e:
                     tqdm.write(f"Failed to create twin for {asset.name}. {e}")
                     return SyftError(message=f"Failed to create twin. {e}")
diff --git a/packages/syft/src/syft/service/action/action_object.py b/packages/syft/src/syft/service/action/action_object.py
index 955ceb8637e..1196e3b5dc1 100644
--- a/packages/syft/src/syft/service/action/action_object.py
+++ b/packages/syft/src/syft/service/action/action_object.py
@@ -46,6 +46,7 @@
 from ...types.syft_object import SYFT_OBJECT_VERSION_1
 from ...types.syft_object import SyftBaseObject
 from ...types.syft_object import SyftObject
+from ...types.syft_object_registry import SyftObjectRegistry
 from ...types.syncable_object import SyncableSyftObject
 from ...types.uid import LineageID
 from ...types.uid import UID
@@ -1412,6 +1413,18 @@ def from_obj(
         if id is not None and syft_lineage_id is not None and id != syft_lineage_id.id:
             raise ValueError("UID and LineageID should match")
 
+        # check if the object's type is supported
+        try:
+            canonical_name, version = SyftObjectRegistry.get_canonical_name_version(
+                syft_action_data
+            )
+        except Exception:
+            obj_type = type(syft_action_data)
+            raise SyftException(
+                f"Error when creating action object for {syft_action_data}.\n"
+                f"Unsupported data type: '{obj_type.__module__}.{obj_type.__name__}'"
+            )
+
         action_type = action_type_for_object(syft_action_data)
         action_object = action_type(syft_action_data_cache=syft_action_data)
         action_object.syft_blob_storage_entry_id = syft_blob_storage_entry_id
diff --git a/packages/syft/src/syft/service/blob_storage/util.py b/packages/syft/src/syft/service/blob_storage/util.py
index df795c86b87..31e1117e43f 100644
--- a/packages/syft/src/syft/service/blob_storage/util.py
+++ b/packages/syft/src/syft/service/blob_storage/util.py
@@ -2,6 +2,7 @@
 from typing import Any
 
 # relative
+from ...service.response import SyftException
 from ...util.util import get_mb_serialized_size
 from ..metadata.server_metadata import ServerMetadata
 from ..metadata.server_metadata import ServerMetadataJSON
@@ -16,4 +17,7 @@ def min_size_for_blob_storage_upload(
 def can_upload_to_blob_storage(
     data: Any, metadata: ServerMetadata | ServerMetadataJSON
 ) -> bool:
-    return get_mb_serialized_size(data) >= min_size_for_blob_storage_upload(metadata)
+    serialized_size = get_mb_serialized_size(data)
+    if serialized_size.is_err():
+        raise SyftException(f"{serialized_size.err()}")
+    return serialized_size.ok() >= min_size_for_blob_storage_upload(metadata)
diff --git a/packages/syft/src/syft/types/syft_object_registry.py b/packages/syft/src/syft/types/syft_object_registry.py
index 3d0548f6cf1..dbbed869cc9 100644
--- a/packages/syft/src/syft/types/syft_object_registry.py
+++ b/packages/syft/src/syft/types/syft_object_registry.py
@@ -76,7 +76,9 @@ def get_canonical_name_version(cls, obj: Any) -> tuple[str, int]:
         obj_type = type(obj)
         if obj_type in cls.__type_to_canonical_name__:
             return cls.__type_to_canonical_name__[obj_type]
-        raise ValueError(f"Could not find canonical name for {obj}")
+        raise ValueError(
+            f"Could not find canonical name for '{obj_type.__module__}.{obj_type.__name__}'"
+        )
 
     @classmethod
     def get_serde_properties(cls, canonical_name: str, version: int) -> tuple:
diff --git a/packages/syft/src/syft/util/util.py b/packages/syft/src/syft/util/util.py
index e0d729ba123..80e0e8dc246 100644
--- a/packages/syft/src/syft/util/util.py
+++ b/packages/syft/src/syft/util/util.py
@@ -45,6 +45,8 @@
 from nacl.signing import VerifyKey
 import nh3
 import requests
+from result import Err
+from result import Ok
 
 # relative
 from ..serde.serialize import _serialize as serialize
@@ -158,8 +160,16 @@ def sizeof(o: Any) -> int:
     return sizeof(data) / (1024.0 * 1024.0)
 
 
-def get_mb_serialized_size(data: Any) -> float:
-    return sys.getsizeof(serialize(data, to_bytes=True)) / (1024 * 1024)
+def get_mb_serialized_size(data: Any) -> Ok[float] | Err[str]:
+    try:
+        serialized_data = serialize(data, to_bytes=True)
+        return Ok(sys.getsizeof(serialized_data) / (1024 * 1024))
+    except Exception as e:
+        data_type = type(data)
+        return Err(
+            f"Failed to serialize data of type '{data_type.__module__}.{data_type.__name__}'. "
+            f"Data type not supported. Detailed error: {e}"
+        )
 
 
 def extract_name(klass: type) -> str: