diff --git a/htdocs/product/class/api_products.class.php b/htdocs/product/class/api_products.class.php
index e3fb4d6079c..fd564b17278 100644
--- a/htdocs/product/class/api_products.class.php
+++ b/htdocs/product/class/api_products.class.php
@@ -802,7 +802,7 @@ class Products extends DolibarrApi
 
         return $this->_cleanObjectDatas($this->productsupplier);
     }
-    
+
     /**
      * Get attributes.
      *
@@ -813,15 +813,15 @@ class Products extends DolibarrApi
      * @url GET attributes
      */
     public function getAttributes()
-    {        
+    {
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         return $prodattr->fetchAll();
     }
-    
+
     /**
      * Get attribute by ID.
      *
@@ -839,17 +839,17 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         $result = $prodattr->fetch((int) $id);
-        
+
         if($result < 0) {
             throw new RestException(404, "Attribute not found");
         }
-        
+
         return $prodattr;
     }
-    
+
     /**
      * Add attributes.
      *
@@ -867,18 +867,18 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         $prodattr->label = $label;
         $prodattr->ref = $ref;
-        
+
         $resid = $prodattr->create(DolibarrApiAccess::$user);
         if ($resid <= 0) {
             throw new RestException(500, "Error creating new attribute");
         }
         return $resid;
     }
-    
+
     /**
      * Update attributes by id.
      *
@@ -898,26 +898,26 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
-        
+
         $result = $prodattr->fetch((int) $id);
         if ($result == 0) {
             throw new RestException(404, 'Attribute not found');
         } elseif ($result < 0) {
             throw new RestException(500, "Error fetching attribute");
         }
-        
-        
+
+
         $prodattr->label = $label;
         $prodattr->ref = $ref;
-        
+
         if ($prodattr->update(DolibarrApiAccess::$user) > 0) {
             return 1;
         }
         throw new RestException(500, "Error updating attribute");
     }
-    
+
     /**
      * Delete attributes by id.
      *
@@ -934,17 +934,17 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         $prodattr->id = (int) $id;
         $result = $prodattr->delete();
-        
+
         if ($result > 0) {
             return 1;
         }
         throw new RestException(500, "Error deleting attribute");
     }
-    
+
     /**
      * Delete attributes by ref.
      *
@@ -961,15 +961,15 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $sql = "DELETE FROM ".MAIN_DB_PREFIX."product_attribute WHERE ref LIKE '". trim($ref) ."'";
-        
+
         if ($this->db->query($sql)) {
             return 1;
         }
         throw new RestException(500, "Error deleting attribute");
     }
-    
+
     /**
      * Get all values for an attribute id.
      *
@@ -986,11 +986,11 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $objectval = new ProductAttributeValue($this->db);
         return $objectval->fetchAllByProductAttribute((int) $id);
     }
-    
+
     /**
      * Get all values for an attribute ref.
      *
@@ -1007,28 +1007,28 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $return = array();
-        
+
         $sql = 'SELECT ';
         $sql .= 'v.fk_product_attribute, v.rowid, v.ref, v.value FROM '.MAIN_DB_PREFIX.'product_attribute_value v ';
         $sql .= "WHERE v.fk_product_attribute = ( SELECT rowid FROM ".MAIN_DB_PREFIX."product_attribute WHERE ref LIKE '". strtoupper(trim($ref)) ."' LIMIT 1)";
 
         $query = $this->db->query($sql);
-        
+
         while ($result = $this->db->fetch_object($query)) {
             $tmp = new ProductAttributeValue($this->db);
             $tmp->fk_product_attribute = $result->fk_product_attribute;
             $tmp->id = $result->rowid;
             $tmp->ref = $result->ref;
             $tmp->value = $result->value;
-            
+
             $return[] = $tmp;
         }
-        
+
         return $return;
     }
-    
+
     /**
      * Add attribute value.
      *
@@ -1047,22 +1047,22 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         if (empty($ref) || empty($value)) {
             throw new RestException(401);
         }
-        
+
         $objectval = new ProductAttributeValue($this->db);
         $objectval->fk_product_attribute = $id;
         $objectval->ref = $ref;
         $objectval->value = $value;
-        
+
         if ($objectval->create(DolibarrApiAccess::$user) > 0) {
             return $objectval->id;
         }
         throw new RestException(500, "Error creating new attribute value");
     }
-    
+
     /**
      * Delete attribute value by id.
      *
@@ -1079,16 +1079,16 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $objectval = new ProductAttributeValue($this->db);
         $objectval->id = (int) $id;
-        
+
         if ($objectval->delete() > 0) {
             return 1;
         }
         throw new RestException(500, "Error deleting attribute value");
     }
-    
+
     /**
      * Delete attribute value by ref.
      *
@@ -1105,16 +1105,16 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $sql = "DELETE FROM ".MAIN_DB_PREFIX."product_attribute_value WHERE ref LIKE '". trim($ref) ."'";
-        
+
         if ($this->db->query($sql)) {
             return 1;
         }
-        
+
         throw new RestException(500, "Error deleting attribute value");
     }
-    
+
     /**
      * Get product variants.
      *
@@ -1131,11 +1131,11 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         return $prodcomb->fetchAllByFkProductParent((int) $id);
     }
-    
+
     /**
      * Get product variants by Product ref.
      *
@@ -1152,19 +1152,19 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->lire || DolibarrApiAccess::$user->rights->service->lire)) {
             throw new RestException(401);
         }
-        
+
         $result = $this->product->fetch('', $ref);
         if(! $result ) {
             throw new RestException(404, 'Product not found');
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         return $prodcomb->fetchAllByFkProductParent((int) $this->product->id);
     }
-    
+
     /**
      * Add variant.
-     * 
+     *
      * "features" is a list of attributes pairs id_attribute=>id_value. Example: array(id_color=>id_Blue, id_size=>id_small, id_option=>id_val_a, ...)
      *
      * @param  int    $id                       ID of Product
@@ -1185,11 +1185,11 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
             throw new RestException(401);
         }
-        
+
         if (empty($id) || empty($weight_impact) || empty($price_impact) || empty($features) || !is_array($features)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         $prodattr_val = new ProductAttributeValue($this->db);
         foreach ($features as $id_attr => $id_value) {
@@ -1200,12 +1200,12 @@ class Products extends DolibarrApi
                 throw new RestException(401);
             }
         }
-        
+
         $result = $this->product->fetch((int) $id);
         if(! $result ) {
             throw new RestException(404, 'Product not found');
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         if (! $prodcomb->fetchByProductCombination2ValuePairs($id, $features))
         {
@@ -1220,10 +1220,10 @@ class Products extends DolibarrApi
             return $prodcomb->id;
         }
     }
-    
+
     /**
      * Add variant by product ref.
-     * 
+     *
      * "features" is a list of attributes pairs id_attribute=>id_value. Example: array(id_color=>id_Blue, id_size=>id_small, id_option=>id_val_a, ...)
      *
      * @param  string $ref                      Ref of Product
@@ -1244,11 +1244,11 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
             throw new RestException(401);
         }
-        
+
         if (empty($ref) || empty($weight_impact) || empty($price_impact) || empty($features) || !is_array($features)) {
             throw new RestException(401);
         }
-        
+
         $prodattr = new ProductAttribute($this->db);
         $prodattr_val = new ProductAttributeValue($this->db);
         foreach ($features as $id_attr => $id_value) {
@@ -1259,16 +1259,16 @@ class Products extends DolibarrApi
                 throw new RestException(404);
             }
         }
-        
+
         $result = $this->product->fetch('', trim($ref));
         if(! $result ) {
             throw new RestException(404, 'Product not found');
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         if (! $prodcomb->fetchByProductCombination2ValuePairs($this->product->id, $features))
         {
-            $result = $prodcomb->createProductCombination(DolibarrApiAccess::$user, $this->product, $features, array(), $price_impact_is_percent, $price_impact, $weight_impact);            
+            $result = $prodcomb->createProductCombination(DolibarrApiAccess::$user, $this->product, $features, array(), $price_impact_is_percent, $price_impact, $weight_impact);
             if ($result > 0)
             {
                 return $result;
@@ -1279,7 +1279,7 @@ class Products extends DolibarrApi
             return $prodcomb->id;
         }
     }
-    
+
     /**
      * Put product variants.
      *
@@ -1297,18 +1297,18 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
             throw new RestException(401);
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         $prodcomb->fetch((int) $id);
-        
+
         $old_prodcomb = dol_clone($prodcomb, 0);
-        
+
         foreach($request_data as $field => $value) {
             if ($field == 'rowid') { continue;
             }
             $prodcomb->$field = $value;
         }
-        
+
         $result = $prodcomb->update(DolibarrApiAccess::$user);
         if ($result > 0)
         {
@@ -1316,7 +1316,7 @@ class Products extends DolibarrApi
         }
         throw new RestException(500, "Error editing variant");
     }
-    
+
     /**
      * Delete product variants.
      *
@@ -1333,7 +1333,7 @@ class Products extends DolibarrApi
         if(! (DolibarrApiAccess::$user->rights->produit->supprimer || DolibarrApiAccess::$user->rights->service->supprimer)) {
             throw new RestException(401);
         }
-        
+
         $prodcomb = new ProductCombination($this->db);
         $prodcomb->id = (int) $id;
         $result = $prodcomb->delete(DolibarrApiAccess::$user);