diff --git a/src/inventory/application/port/output/db/customization_name_exists_for_product.rs b/src/inventory/application/port/output/db/customization_name_exists_for_product.rs
new file mode 100644
index 0000000..0550b3c
--- /dev/null
+++ b/src/inventory/application/port/output/db/customization_name_exists_for_product.rs
@@ -0,0 +1,64 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use mockall::predicate::*;
+use mockall::*;
+
+use crate::inventory::domain::product_aggregate::Customization;
+
+use super::errors::*;
+#[cfg(test)]
+#[allow(unused_imports)]
+pub use tests::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait CustomizationNameExistsForProductDBPort: Send + Sync {
+    async fn customization_name_exists_for_product(
+        &self,
+        c: &Customization,
+    ) -> InventoryDBResult<bool>;
+}
+
+pub type CustomizationNameExistsForProductDBPortObj =
+    std::sync::Arc<dyn CustomizationNameExistsForProductDBPort>;
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use std::sync::Arc;
+
+    pub fn mock_customization_name_exists_for_product_db_port_false(
+        times: Option<usize>,
+    ) -> CustomizationNameExistsForProductDBPortObj {
+        let mut m = MockCustomizationNameExistsForProductDBPort::new();
+        if let Some(times) = times {
+            m.expect_customization_name_exists_for_product()
+                .times(times)
+                .returning(|_| Ok(false));
+        } else {
+            m.expect_customization_name_exists_for_product()
+                .returning(|_| Ok(false));
+        }
+
+        Arc::new(m)
+    }
+
+    pub fn mock_customization_name_exists_for_product_db_port_true(
+        times: Option<usize>,
+    ) -> CustomizationNameExistsForProductDBPortObj {
+        let mut m = MockCustomizationNameExistsForProductDBPort::new();
+        if let Some(times) = times {
+            m.expect_customization_name_exists_for_product()
+                .times(times)
+                .returning(|_| Ok(true));
+        } else {
+            m.expect_customization_name_exists_for_product()
+                .returning(|_| Ok(true));
+        }
+
+        Arc::new(m)
+    }
+}
diff --git a/src/inventory/application/port/output/db/mod.rs b/src/inventory/application/port/output/db/mod.rs
index 599269b..3833d54 100644
--- a/src/inventory/application/port/output/db/mod.rs
+++ b/src/inventory/application/port/output/db/mod.rs
@@ -4,6 +4,8 @@
 
 pub mod category_id_exists;
 pub mod category_name_exists_for_store;
+pub mod customization_id_exists;
+pub mod customization_name_exists_for_product;
 pub mod errors;
 pub mod product_id_exists;
 pub mod product_name_exists_for_category;