diff --git a/commerce_coordinator/apps/commercetools/catalog_info/constants.py b/commerce_coordinator/apps/commercetools/catalog_info/constants.py
index 70d67c60..62b86e56 100644
--- a/commerce_coordinator/apps/commercetools/catalog_info/constants.py
+++ b/commerce_coordinator/apps/commercetools/catalog_info/constants.py
@@ -33,6 +33,18 @@ class TwoUKeys:
     PAYPAL_CONNECTOR_CONTAINER = 'paypal-commercetools-connector'
     PAYPAL_CONNECTOR_SETTINGS_KEY = 'settings'
 
+    # Return Item Types
+    RETURN_ITEM_CUSTOM_TYPE = 'returnItemCustomType'
+
+    # Return Item Custom Fields
+    TRANSACTION_ID = 'transactionId'
+
+    # Transaction Types
+    TRANSACTION_CUSTOM_TYPE = 'transactionCustomType'
+
+    # Transaction Custom Fields
+    RETURN_ITEM_ID = 'returnItemId'
+
 
 class EdXFieldNames:
     """edX Specific field names for use in Commercetools"""
diff --git a/commerce_coordinator/apps/commercetools/catalog_info/foundational_types.py b/commerce_coordinator/apps/commercetools/catalog_info/foundational_types.py
index 4613b204..215ea38a 100644
--- a/commerce_coordinator/apps/commercetools/catalog_info/foundational_types.py
+++ b/commerce_coordinator/apps/commercetools/catalog_info/foundational_types.py
@@ -188,6 +188,50 @@ class TwoUCustomTypes:
         ]
     )
 
+    RETURN_ITEM_TYPE_DRAFT = TypeDraft(
+       key=TwoUKeys.RETURN_ITEM_CUSTOM_TYPE,
+       name=ls({'en': 'Return Item Custom Type'}),
+       resource_type_ids=[ResourceTypeId.ORDER_RETURN_ITEM],
+       # ^^^ this cannot be updated, the whole type has to be unassigned, removed and replaced.
+       field_definitions=[
+            # Updating Field Definitions only supports:
+            # - basic field definitions changes, like label and input_hint, not type or
+            # - whether it is required or not.
+            # - It can add new ones.
+            # If you need something done that can't be, the whole type has to be unassigned, removed and replaced.
+
+            FieldDefinition(
+                type=CustomFieldStringType(),
+                name=TwoUKeys.TRANSACTION_ID,
+                required=False,
+                label=ls({'en': 'Transaction ID'}),
+                input_hint=TypeTextInputHint.SINGLE_LINE
+            )
+       ]
+    )
+
+    TRANSACTION_TYPE_DRAFT = TypeDraft(
+        key=TwoUKeys.TRANSACTION_CUSTOM_TYPE,
+        name=ls({'en': 'Transaction Custom Type'}),
+        resource_type_ids=[ResourceTypeId.TRANSACTION],
+        # ^^^ this cannot be updated, the whole type has to be unassigned, removed and replaced.
+        field_definitions=[
+            # Updating Field Definitions only supports:
+            # - basic field definitions changes, like label and input_hint, not type or
+            # - whether it is required or not.
+            # - It can add new ones.
+            # If you need something done that can't be, the whole type has to be unassigned, removed and replaced.
+
+            FieldDefinition(
+                type=CustomFieldStringType(),
+                name=TwoUKeys.RETURN_ITEM_ID,
+                required=False,
+                label=ls({'en': 'Return Item ID'}),
+                input_hint=TypeTextInputHint.SINGLE_LINE
+            )
+        ]
+    )
+
 
 class TwoUCustomObjects:
     PAYPAL_CUSTOM_OBJECT_DRAFT = CustomObjectDraft(
diff --git a/commerce_coordinator/apps/commercetools/management/commands/create_returnitem_custom_type.py b/commerce_coordinator/apps/commercetools/management/commands/create_returnitem_custom_type.py
new file mode 100644
index 00000000..216f39eb
--- /dev/null
+++ b/commerce_coordinator/apps/commercetools/management/commands/create_returnitem_custom_type.py
@@ -0,0 +1,25 @@
+import json
+
+from commercetools import CommercetoolsError
+
+from commerce_coordinator.apps.commercetools.catalog_info.foundational_types import TwoUCustomTypes
+from commerce_coordinator.apps.commercetools.management.commands._ct_api_client_command import (
+    CommercetoolsAPIClientCommand
+)
+
+
+class Command(CommercetoolsAPIClientCommand):
+    help = 'Create a custom type for returnItem with field transactionId'
+
+    def handle(self, *args, **options):
+        current_draft = TwoUCustomTypes.RETURN_ITEM_TYPE_DRAFT
+        type_key = current_draft.key
+
+        try:
+            ret = self.ct_api_client.base_client.types.get_by_key(type_key)
+            print(f"ReturnItem custom type with field transactionId already exists: {json.dumps(ret.serialize())}")
+        except CommercetoolsError as ex:
+            ret = self.ct_api_client.base_client.types.create(
+                TwoUCustomTypes.RETURN_ITEM_TYPE_DRAFT
+            )
+            print(f"Created ReturnItem custom type with field transactionId: {json.dumps(ret.serialize())}")
diff --git a/commerce_coordinator/apps/commercetools/management/commands/create_transaction_custom_type.py b/commerce_coordinator/apps/commercetools/management/commands/create_transaction_custom_type.py
new file mode 100644
index 00000000..8d99426d
--- /dev/null
+++ b/commerce_coordinator/apps/commercetools/management/commands/create_transaction_custom_type.py
@@ -0,0 +1,25 @@
+import json
+
+from commercetools import CommercetoolsError
+
+from commerce_coordinator.apps.commercetools.catalog_info.foundational_types import TwoUCustomTypes
+from commerce_coordinator.apps.commercetools.management.commands._ct_api_client_command import (
+    CommercetoolsAPIClientCommand
+)
+
+
+class Command(CommercetoolsAPIClientCommand):
+    help = 'Create a custom type for transactions with field returnItemId'
+
+    def handle(self, *args, **options):
+        current_draft = TwoUCustomTypes.TRANSACTION_TYPE_DRAFT
+        type_key = current_draft.key
+
+        try:
+            ret = self.ct_api_client.base_client.types.get_by_key(type_key)
+            print(f"Transaction custom type with field returnItemId already exists: {json.dumps(ret.serialize())}")
+        except CommercetoolsError as ex:
+            ret = self.ct_api_client.base_client.types.create(
+                TwoUCustomTypes.TRANSACTION_TYPE_DRAFT
+            )
+            print(f"Created Transaction custom type with field returnItemId: {json.dumps(ret.serialize())}")