Index: grails-app/controllers/com/lemans/ds/catalog/CatalogProductController.groovy
===================================================================
diff -u -radf4fbe3994e8e6a6496a9e8a85ef3fc61ba952b -r27aa741dd7c870bbe092155412de4e67ebf5c67e
--- grails-app/controllers/com/lemans/ds/catalog/CatalogProductController.groovy	(.../CatalogProductController.groovy)	(revision adf4fbe3994e8e6a6496a9e8a85ef3fc61ba952b)
+++ grails-app/controllers/com/lemans/ds/catalog/CatalogProductController.groovy	(.../CatalogProductController.groovy)	(revision 27aa741dd7c870bbe092155412de4e67ebf5c67e)
@@ -28,15 +28,14 @@
         if (errors) {
             renderErrors(errors)
         } else {
-            CatalogProduct catalogProduct = catalogProductManagerService.createCatalogProductAssociation(values, auditUserName)
-            if(catalogProduct.hasErrors()) {
-                errors.addAll(catalogProduct.errors.getAllErrors()*.defaultMessage?.flatten())
-                renderErrors(errors)
-            } else {
-                renderObject catalogProduct
+            List<CatalogProduct> catalogProducts = catalogProductManagerService.bulkCreateCatalogProductAssociation(catalogInstanceId, values.productIds, auditUserName)
+            def response = catalogProducts.collect { cp ->
+                cp.hasErrors() ?
+                        [productId: cp.productId, catalogInstanceId: cp.catalogInstanceId, errors: cp.errors.getAllErrors()*.defaultMessage]
+                        : cp
             }
+            renderMany(response)
         }
-
     }
 
     def remove(Integer catalogInstanceId, Integer productId) {
@@ -49,8 +48,8 @@
         if (!values.catalogInstanceId) {
             errors << 'catalogInstanceId is required'
         }
-        if (!values.productId) {
-            errors << 'productId is required'
+        if (!values.productIds) {
+            errors << 'productIds are required'
         }
         errors
     }
Index: grails-app/services/com/lemans/ds/catalog/CatalogProductManagerService.groovy
===================================================================
diff -u -radf4fbe3994e8e6a6496a9e8a85ef3fc61ba952b -r27aa741dd7c870bbe092155412de4e67ebf5c67e
--- grails-app/services/com/lemans/ds/catalog/CatalogProductManagerService.groovy	(.../CatalogProductManagerService.groovy)	(revision adf4fbe3994e8e6a6496a9e8a85ef3fc61ba952b)
+++ grails-app/services/com/lemans/ds/catalog/CatalogProductManagerService.groovy	(.../CatalogProductManagerService.groovy)	(revision 27aa741dd7c870bbe092155412de4e67ebf5c67e)
@@ -24,6 +24,10 @@
         dqx(criteria).executeFrom('dbo.CatalogProduct', clauses(criteria))
     }
 
+    List<CatalogProduct> bulkCreateCatalogProductAssociation(Integer catalogInstanceId, List<Integer> productIds, String username) {
+        productIds.collect {productId -> createCatalogProductAssociation([catalogInstanceId: catalogInstanceId, productId: productId], username)}
+    }
+
     CatalogProduct createCatalogProductAssociation(Map values, String username) {
         CatalogProduct catalogProduct = new CatalogProduct()
         applyValuesToDomain(values, catalogProduct)