diff --git a/src/inventory/adapters/output/db/postgres/errors.rs b/src/inventory/adapters/output/db/postgres/errors.rs
index a3ac3f6..cf309b2 100644
--- a/src/inventory/adapters/output/db/postgres/errors.rs
+++ b/src/inventory/adapters/output/db/postgres/errors.rs
@@ -19,6 +19,8 @@ impl From<SqlxError> for InventoryDBError {
                     return Self::DuplicateStoreID;
                 } else if msg.contains("cqrs_inventory_store_query_product_id_key") {
                     return Self::DuplicateProductID;
+                } else if msg.contains("cqrs_inventory_product_customizations_query_customization_id_key") {
+                    return Self::DuplicateCustomizationID;
                 } else if msg.contains("cqrs_inventory_store_query_category_id_key") {
                     return Self::DuplicateCategoryID;
                 } else if msg.contains("cqrs_inventory_product_query_name_key") {
@@ -27,6 +29,8 @@ impl From<SqlxError> for InventoryDBError {
                     return Self::DuplicateProductName;
                 } else if msg.contains("cqrs_inventory_store_query_name_key") {
                     return Self::DuplicateStoreName;
+                } else if msg.contains("cqrs_inventory_product_customizations_query_name_key") {
+                    return Self::DuplicateCustomizationName
                 } else {
                     println!("{msg}");
                 }
diff --git a/src/inventory/application/port/output/db/errors.rs b/src/inventory/application/port/output/db/errors.rs
index 66a7560..df3ddfb 100644
--- a/src/inventory/application/port/output/db/errors.rs
+++ b/src/inventory/application/port/output/db/errors.rs
@@ -15,5 +15,7 @@ pub enum InventoryDBError {
     DuplicateStoreID,
     DuplicateProductName,
     DuplicateProductID,
+    DuplicateCustomizationID,
+    DuplicateCustomizationName,
     InternalError,
 }
diff --git a/src/inventory/application/services/errors.rs b/src/inventory/application/services/errors.rs
index 9d71a1f..06663f4 100644
--- a/src/inventory/application/services/errors.rs
+++ b/src/inventory/application/services/errors.rs
@@ -15,6 +15,7 @@ pub enum InventoryError {
     DuplicateCategoryName,
     DuplicateStoreName,
     DuplicateProductName,
+    DuplicateCustomizationName,
     InternalError,
 }
 
@@ -24,6 +25,7 @@ impl From<InventoryDBError> for InventoryError {
             InventoryDBError::DuplicateCategoryName => Self::DuplicateCategoryName,
             InventoryDBError::DuplicateStoreName => Self::DuplicateStoreName,
             InventoryDBError::DuplicateProductName => Self::DuplicateProductName,
+            InventoryDBError::DuplicateCustomizationName => Self::DuplicateCustomizationName,
             InventoryDBError::DuplicateStoreID => {
                 error!("DuplicateStoreID");
                 Self::InternalError
@@ -36,6 +38,10 @@ impl From<InventoryDBError> for InventoryError {
                 error!("DuplicateCategoryID");
                 Self::InternalError
             }
+            InventoryDBError::DuplicateCustomizationID => {
+                error!("DuplicateCustomizationID");
+                Self::InternalError
+            }
             InventoryDBError::InternalError => Self::InternalError,
         }
     }