diff --git a/gso/cli/imports.py b/gso/cli/imports.py
index cd2e5998dd39ea965f1c476357c1738afeaae372..9afc6efbdf4cb47a7f38bb002ba94ae7d7c2b115 100644
--- a/gso/cli/imports.py
+++ b/gso/cli/imports.py
@@ -22,7 +22,6 @@ from gso.products.product_blocks.bgp_session import IPFamily
 from gso.products.product_blocks.edge_port import EdgePortType, EncapsulationType
 from gso.products.product_blocks.iptrunk import IptrunkType
 from gso.products.product_blocks.router import RouterRole
-from gso.products.product_blocks.service_binding_port import VLAN_ID
 from gso.products.product_blocks.switch import SwitchModel
 from gso.products.product_types.nren_l3_core_service import NRENL3CoreServiceType
 from gso.services.partners import (
@@ -50,6 +49,7 @@ from gso.utils.types.ip_address import (
     IPV6Netmask,
     PortNumber,
 )
+from gso.utils.types.virtual_identifiers import VLAN_ID
 
 app: typer.Typer = typer.Typer()
 
diff --git a/gso/workflows/l2_circuit/create_layer_2_circuit.py b/gso/workflows/l2_circuit/create_layer_2_circuit.py
index 59f5983d6dc4ea3890842a31dcca5ba1caf015b9..a3199bc1ad2ea56f6ed62a66f075216fa0e99881 100644
--- a/gso/workflows/l2_circuit/create_layer_2_circuit.py
+++ b/gso/workflows/l2_circuit/create_layer_2_circuit.py
@@ -43,12 +43,12 @@ def initial_input_generator(product_name: str) -> FormGenerator:
     initial_user_input = yield CreateLayer2CircuitServicePage
 
     class Layer2CircuitSideSelection(BaseModel):
-        edge_port: active_edge_port_selector(
+        edge_port: active_edge_port_selector(  # type: ignore[valid-type]
             partner_id=initial_user_input.partner if initial_user_input.partner != geant_partner_id else None
         )
         vlan_id: VLAN_ID
 
-    def _vlan_range_field(*, is_tagged: bool) -> VLAN_ID | ReadOnlyField:
+    def _vlan_range_field(*, is_tagged: bool) -> VLAN_ID:
         """Return the appropriate field type based on whether the circuit is tagged."""
         return VLAN_ID if is_tagged else ReadOnlyField(None, default_type=int)
 
@@ -56,14 +56,14 @@ def initial_input_generator(product_name: str) -> FormGenerator:
         model_config = ConfigDict(title=f"{product_name} - Configure Edge Ports")
 
         vlan_range_label: Label = Field("Please set a VLAN range, bounds including.", exclude=True)
-        vlan_range_lower_bound: _vlan_range_field(
+        vlan_range_lower_bound: _vlan_range_field(  # type: ignore[valid-type]
             is_tagged=initial_user_input.layer_2_circuit_type == Layer2CircuitType.TAGGED
         )
-        vlan_range_upper_bound: _vlan_range_field(
+        vlan_range_upper_bound: _vlan_range_field(  # type: ignore[valid-type]
             is_tagged=initial_user_input.layer_2_circuit_type == Layer2CircuitType.TAGGED
         )
         vlan_divider: Divider = Field(None, exclude=True)
-        policer_bandwidth: (
+        policer_bandwidth: (  # type: ignore[valid-type]
             BandwidthString if initial_user_input.policer_enabled else ReadOnlyField(None, default_type=str)
         )
         geant_sid: str
diff --git a/gso/workflows/l2_circuit/modify_layer_2_circuit.py b/gso/workflows/l2_circuit/modify_layer_2_circuit.py
index 21b397f11546de7f5e5d42c72f0790443913ace2..5bb7ba19aea5594d67a8980d874fd40a46082c01 100644
--- a/gso/workflows/l2_circuit/modify_layer_2_circuit.py
+++ b/gso/workflows/l2_circuit/modify_layer_2_circuit.py
@@ -27,7 +27,7 @@ def initial_input_form_generator(subscription_id: UUIDstr) -> FormGenerator:
     class ModifyL2CircuitForm(FormPage):
         model_config = ConfigDict(title=f"Modify {product_name}")
         tt_number: TTNumber
-        partner: ReadOnlyField(get_partner_by_id(subscription.customer_id).name, default_type=str)
+        partner: ReadOnlyField(get_partner_by_id(subscription.customer_id).name, default_type=str)  # type: ignore[valid-type]
         divider: Divider = Field(None, exclude=True)
 
         layer_2_circuit_type: Layer2CircuitType = subscription.layer_2_circuit.layer_2_circuit_type
@@ -40,27 +40,27 @@ def initial_input_form_generator(subscription_id: UUIDstr) -> FormGenerator:
 
         vlan_range_label: Label = Field("Please set a VLAN range, bounds including.", exclude=True)
         if layer_2_circuit_input.layer_2_circuit_type == Layer2CircuitType.TAGGED:
-            vlan_range_lower_bound: VLAN_ID = subscription.layer_2_circuit.vlan_range_lower_bound
-            vlan_range_upper_bound: VLAN_ID = subscription.layer_2_circuit.vlan_range_upper_bound
+            vlan_range_lower_bound: VLAN_ID = subscription.layer_2_circuit.vlan_range_lower_bound  # type: ignore[assignment]
+            vlan_range_upper_bound: VLAN_ID = subscription.layer_2_circuit.vlan_range_upper_bound  # type: ignore[assignment]
         else:
-            vlan_range_lower_bound: ReadOnlyField(None, default_type=int)
-            vlan_range_upper_bound: ReadOnlyField(None, default_type=int)
+            vlan_range_lower_bound: ReadOnlyField(None, default_type=int)  # type: ignore[no-redef, valid-type]
+            vlan_range_upper_bound: ReadOnlyField(None, default_type=int)  # type: ignore[no-redef, valid-type]
 
         vlan_divider: Divider = Field(None, exclude=True)
         if layer_2_circuit_input.policer_enabled:
-            policer_bandwidth: BandwidthString = subscription.layer_2_circuit.bandwidth
+            policer_bandwidth: BandwidthString = subscription.layer_2_circuit.bandwidth  # type: ignore[assignment]
         else:
-            policer_bandwidth: ReadOnlyField(None, default_type=str)
+            policer_bandwidth: ReadOnlyField(None, default_type=str)  # type: ignore[no-redef, valid-type]
         policer_divider: Divider = Field(None, exclude=True)
 
-        layer_2_circuit_side_a: ReadOnlyField(
+        layer_2_circuit_side_a: ReadOnlyField(  # type: ignore[valid-type]
             EdgePort.from_subscription(
                 subscription.layer_2_circuit.layer_2_circuit_sides[0].sbp.edge_port.owner_subscription_id
             ).description,
             default_type=str,
         )
         side_divider: Divider = Field(None, exclude=True)
-        layer_2_circuit_side_b: ReadOnlyField(
+        layer_2_circuit_side_b: ReadOnlyField(  # type: ignore[valid-type]
             EdgePort.from_subscription(
                 subscription.layer_2_circuit.layer_2_circuit_sides[1].sbp.edge_port.owner_subscription_id
             ).description,
@@ -80,7 +80,7 @@ def modify_layer_2_circuit_subscription(
     vlan_range_upper_bound: VLAN_ID | None,
     policer_enabled: bool,  # noqa: FBT001
     policer_bandwidth: BandwidthString | None,
-):
+) -> dict:
     """Update the Layer 2 Circuit subscription with the new values."""
     subscription.layer_2_circuit.layer_2_circuit_type = layer_2_circuit_type
     subscription.layer_2_circuit.vlan_range_lower_bound = vlan_range_lower_bound
diff --git a/test/workflows/l2_circuit/test_create_layer_2_circuit.py b/test/workflows/l2_circuit/test_create_layer_2_circuit.py
index cc1d33dc80516fb8e0a5600423e7d86e5ac3b62a..7550d969a342dbdd16e30ede7a4ae3a39f9520a9 100644
--- a/test/workflows/l2_circuit/test_create_layer_2_circuit.py
+++ b/test/workflows/l2_circuit/test_create_layer_2_circuit.py
@@ -15,8 +15,6 @@ def layer_2_circuit_input(faker, partner_factory, edge_port_subscription_factory
     edge_port_a = edge_port_subscription_factory(partner=partner)
     edge_port_b = edge_port_subscription_factory(partner=partner)
     policer_enabled = faker.boolean()
-
-
     return [
         {"product": product_id},
         {
@@ -35,9 +33,8 @@ def layer_2_circuit_input(faker, partner_factory, edge_port_subscription_factory
         },
     ]
 
-@pytest.mark.parametrize(
-    "layer_2_circuit_service_type", [ProductName.GEANT_PLUS, ProductName.EXPRESSROUTE]
-)
+
+@pytest.mark.parametrize("layer_2_circuit_service_type", [ProductName.GEANT_PLUS, ProductName.EXPRESSROUTE])
 @pytest.mark.workflow()
 def test_create_layer_2_circuit_success(
     layer_2_circuit_service_type,
@@ -46,8 +43,7 @@ def test_create_layer_2_circuit_success(
     partner_factory,
     data_config_filename,
 ):
-
-    result, process_stat, step_log = run_workflow("create_layer_2_circuit", layer_2_circuit_input)
+    result, _, _ = run_workflow("create_layer_2_circuit", layer_2_circuit_input)
     assert_complete(result)
     state = extract_state(result)
     subscription = Layer2Circuit.from_subscription(state["subscription_id"])