diff --git a/apps/mappings/imports/modules/expense_custom_fields.py b/apps/mappings/imports/modules/expense_custom_fields.py
index 73a5f33..97891b3 100644
--- a/apps/mappings/imports/modules/expense_custom_fields.py
+++ b/apps/mappings/imports/modules/expense_custom_fields.py
@@ -1,9 +1,11 @@
+import logging
 from datetime import datetime
 from typing import List, Dict
 from apps.mappings.imports.modules.base import Base
 from fyle_accounting_mappings.models import (
     DestinationAttribute,
-    ExpenseAttribute
+    ExpenseAttribute,
+    Mapping
 )
 from apps.mappings.exceptions import handle_import_exceptions
 from apps.mappings.models import ImportLog
@@ -11,6 +13,9 @@
 from apps.workspaces.models import FyleCredential
 from apps.mappings.constants import FYLE_EXPENSE_SYSTEM_FIELDS
 
+logger = logging.getLogger(__name__)
+logger.level = logging.INFO
+
 
 class ExpenseCustomField(Base):
     """
@@ -176,3 +181,28 @@ def import_destination_attribute_to_fyle(self, import_log: ImportLog):
         self.sync_expense_attributes(platform)
 
         self.create_mappings()
+
+
+def disable_custom_attributes(workspace_id: int, custom_fields_to_disable: Dict, *args, **kwargs):
+    """
+    custom_fields_to_disable object format:
+    {
+        'destination_id': {
+            'value': 'old_custom_field_name',
+            'updated_value': 'new_custom_field_name',
+            'code': 'old_code',
+            'update_code': 'new_code' ---- if the code is updated else same as code
+        }
+    }
+
+    Currently JOB is only field that can be imported as Custom Field, may need to
+    update this function if more fields are added in future
+    """
+    custom_field_mappings = Mapping.objects.filter(
+        workspace_id=workspace_id,
+        destination_type='JOB',
+        destination_id__destination_id__in=custom_fields_to_disable.keys()
+    )
+
+    logger.info(f"Deleting Custom Field Mappings | WORKSPACE_ID: {workspace_id} | COUNT: {custom_field_mappings.count()}")
+    custom_field_mappings.delete()
diff --git a/apps/sage300/utils.py b/apps/sage300/utils.py
index 342eecc..873575b 100644
--- a/apps/sage300/utils.py
+++ b/apps/sage300/utils.py
@@ -16,6 +16,7 @@
     'CATEGORY': 'apps.mappings.imports.modules.categories.disable_categories',
     'MERCHANT': 'apps.mappings.imports.modules.merchants.disable_merchants',
     'COST_CENTER': 'apps.mappings.imports.modules.cost_centers.disable_cost_centers',
+    'CUSTOM': 'apps.mappings.imports.modules.expense_custom_fields.disable_custom_attributes'
 }
 
 
diff --git a/tests/test_mappings/test_imports/test_modules/test_expense_fields.py b/tests/test_mappings/test_imports/test_modules/test_expense_fields.py
index 6027e01..9d5f0ef 100644
--- a/tests/test_mappings/test_imports/test_modules/test_expense_fields.py
+++ b/tests/test_mappings/test_imports/test_modules/test_expense_fields.py
@@ -1,5 +1,5 @@
-from apps.mappings.imports.modules.expense_custom_fields import ExpenseCustomField
-from fyle_accounting_mappings.models import DestinationAttribute
+from apps.mappings.imports.modules.expense_custom_fields import ExpenseCustomField, disable_custom_attributes
+from fyle_accounting_mappings.models import DestinationAttribute, ExpenseAttribute, Mapping
 from apps.mappings.models import ImportLog
 
 
@@ -202,3 +202,50 @@ def test_post_to_fyle_and_sync(
             'is_enabled': True
         }]
     )
+
+
+def test_disable_custom_attributes(db, create_temp_workspace):
+    destination_attribute = DestinationAttribute.objects.create(
+        workspace_id=1,
+        attribute_type='JOB',
+        value='old_custom_field_name',
+        code='old_code',
+        destination_id='123',
+        active=True
+    )
+
+    expense_attribute = ExpenseAttribute.objects.create(
+        workspace_id=1,
+        attribute_type='CUSTOM',
+        value='old_code old_custom_field_name',
+        source_id='456',
+        active=True
+    )
+
+    mapping = Mapping.objects.create(
+        workspace_id=1,
+        source_id=expense_attribute.id,
+        source_type='CUSTOM',
+        destination_id=destination_attribute.id,
+        destination_type='JOB'
+    )
+
+    custom_fields_to_disable = {
+        '123': {
+            'value': 'old_custom_field_name',
+            'updated_value': 'new_custom_field_name',
+            'code': 'old_code',
+            'updated_code': 'new_code'
+        }
+    }
+
+    disable_custom_attributes(1, custom_fields_to_disable)
+
+    count = 0
+    try:
+        mapping.refresh_from_db()
+    except Exception as e:
+        count += 1
+        assert str(e) == 'Mapping matching query does not exist.'
+
+    assert count == 1