diff --git a/cognee/modules/data/methods/__init__.py b/cognee/modules/data/methods/__init__.py
index 83913085c..7936a9afd 100644
--- a/cognee/modules/data/methods/__init__.py
+++ b/cognee/modules/data/methods/__init__.py
@@ -10,6 +10,7 @@ from .get_authorized_dataset import get_authorized_dataset
 from .get_authorized_dataset_by_name import get_authorized_dataset_by_name
 from .get_data import get_data
 from .get_unique_dataset_id import get_unique_dataset_id
+from .get_unique_data_id import get_unique_data_id
 from .get_authorized_existing_datasets import get_authorized_existing_datasets
 from .get_dataset_ids import get_dataset_ids
 
diff --git a/cognee/modules/data/methods/get_unique_data_id.py b/cognee/modules/data/methods/get_unique_data_id.py
new file mode 100644
index 000000000..3fc184ce4
--- /dev/null
+++ b/cognee/modules/data/methods/get_unique_data_id.py
@@ -0,0 +1,71 @@
+from uuid import uuid5, NAMESPACE_OID, UUID
+from typing import Optional
+from sqlalchemy import select
+
+from cognee.modules.data.models.Data import Data
+from cognee.infrastructure.databases.relational import get_relational_engine
+from cognee.modules.users.models import User
+
+
+async def get_unique_data_id(data_identifier: str, user: User, tenant_id: Optional[UUID]) -> UUID:
+    """
+    Function returns a unique UUID for data based on data identifier, user id and tenant id.
+    If data with legacy ID exists, return that ID to maintain compatibility.
+
+    Args:
+        data_identifier: A way to uniquely identify data (e.g. file hash, data name, etc.)
+        user: User object adding the data
+        tenant_id: UUID of the tenant for which data is being added
+
+    Returns:
+        UUID: Unique identifier for the data
+    """
+
+    def _get_deprecated_unique_data_id(data_identifier: str, user: User) -> UUID:
+        """
+        Deprecated function, returns a unique UUID for data based on data identifier and user id.
+        Needed to support legacy data without tenant information.
+        Args:
+            data_identifier: A way to uniquely identify data (e.g. file hash, data name, etc.)
+            user: User object adding the data
+
+        Returns:
+            UUID: Unique identifier for the data
+        """
+        # return UUID hash of file contents + owner id + tenant_id
+        return uuid5(NAMESPACE_OID, f"{data_identifier}{str(user.id)}")
+
+    def _get_modern_unique_data_id(data_identifier: str, user: User, tenant_id: UUID) -> UUID:
+        """
+        Function returns a unique UUID for data based on data identifier, user id and tenant id.
+        Args:
+            data_identifier: A way to uniquely identify data (e.g. file hash, data name, etc.)
+            user: User object adding the data
+            tenant_id: UUID of the tenant for which data is being added
+
+        Returns:
+            UUID: Unique identifier for the data
+        """
+        # return UUID hash of file contents + owner id + tenant_id
+        return uuid5(NAMESPACE_OID, f"{data_identifier}{str(user.id)}{str(tenant_id)}")
+
+    # Get all possible data_id values
+    data_id = {
+        "modern_data_id": _get_modern_unique_data_id(
+            data_identifier=data_identifier, user=user, tenant_id=tenant_id
+        ),
+        "legacy_data_id": _get_deprecated_unique_data_id(
+            data_identifier=data_identifier, user=user
+        ),
+    }
+
+    # Check if data item with legacy_data_id exists, if so use that one, else use modern_data_id
+    db_engine = get_relational_engine()
+    async with db_engine.get_async_session() as session:
+        legacy_data_point = (
+            await session.execute(select(Data).filter(Data.id == data_id["legacy_data_id"]))
+        ).scalar_one_or_none()
+
+        if not legacy_data_point:
+            return data_id["modern_data_id"]
+        return data_id["legacy_data_id"]
diff --git a/cognee/modules/ingestion/identify.py b/cognee/modules/ingestion/identify.py
index 977ff3f0b..5a0fe379e 100644
--- a/cognee/modules/ingestion/identify.py
+++ b/cognee/modules/ingestion/identify.py
@@ -1,11 +1,13 @@
-from uuid import uuid5, NAMESPACE_OID
+from uuid import UUID
 from .data_types import IngestionData
 
 from cognee.modules.users.models import User
+from cognee.modules.data.methods import get_unique_data_id
 
 
-def identify(data: IngestionData, user: User) -> str:
+async def identify(data: IngestionData, user: User) -> UUID:
     data_content_hash: str = data.get_identifier()
 
-    # return UUID hash of file contents + owner id
-    return uuid5(NAMESPACE_OID, f"{data_content_hash}{user.id}")
+    return await get_unique_data_id(
+        data_identifier=data_content_hash, user=user, tenant_id=user.tenant_id
+    )