MAGETWO-71922: Error in Import Customers Main File with custom attribute.

Author: Bohdan Korablov

app/code/Magento/CustomerImportExport/Model/Export/Address.php

@@ -34,6 +34,11 @@ class Address extends \Magento\ImportExport\Model\Export\Entity\AbstractEav
      */
     const COLUMN_COUNTRY_ID = 'country_id';
 
+    /**
+     * Name of region id column
+     */
+    const COLUMN_REGION_ID = 'region_id';
+
     /**#@+
      * Particular columns that contains of customer default addresses
      */
@@ -255,6 +260,7 @@ public function exportItem($item)
         $row[self::COLUMN_ADDRESS_ID] = $item['entity_id'];
         $row[self::COLUMN_EMAIL] = $customer['email'];
         $row[self::COLUMN_WEBSITE] = $this->_websiteIdToCode[$customer['website_id']];
+        $row[self::COLUMN_REGION_ID] = $item->getRegionId();
 
         $this->getWriter()->writeRow($row);
     }

app/code/Magento/CustomerImportExport/Model/Import/Address.php

@@ -486,7 +486,9 @@ protected function _mergeEntityAttributes(array $newAttributes, array $attribute
      */
     protected function _prepareDataForUpdate(array $rowData)
     {
-        $multiSeparator = $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR];
+        $multiSeparator = isset($this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR])
+            ? $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]
+            : Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR;
         $email = strtolower($rowData[self::COLUMN_EMAIL]);
         $customerId = $this->_getCustomerId($email, $rowData[self::COLUMN_WEBSITE]);
         // entity table data
@@ -738,9 +740,9 @@ protected function _validateRowForUpdate(array $rowData, $rowNumber)
                             continue;
                         }
                         if (isset($rowData[$attributeCode]) && strlen($rowData[$attributeCode])) {
-                            $multiSeparator = isset($this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]) ?
-                                $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR] :
-                                Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR;
+                            $multiSeparator = isset($this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR])
+                                ? $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]
+                                : Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR;
                             $this->isAttributeValid(
                                 $attributeCode,
                                 $attributeParams,

app/code/Magento/CustomerImportExport/Model/Import/Customer.php

@@ -339,7 +339,9 @@ protected function _getNextEntityId()
      */
     protected function _prepareDataForUpdate(array $rowData)
     {
-        $multiSeparator = $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR];
+        $multiSeparator = isset($this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR])
+            ? $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]
+            : Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR;
         $entitiesToCreate = [];
         $entitiesToUpdate = [];
         $attributesToSave = [];
@@ -546,7 +548,9 @@ protected function _validateRowForUpdate(array $rowData, $rowNumber)
                         $attributeParams,
                         $rowData,
                         $rowNumber,
-                        $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]
+                        isset($this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR])
+                            ? $this->_parameters[Import::FIELD_FIELD_MULTIPLE_VALUE_SEPARATOR]
+                            : Import::DEFAULT_GLOBAL_MULTI_VALUE_SEPARATOR
                     );
                 } elseif ($attributeParams['is_required'] && !$this->_getCustomerId($email, $website)) {
                     $this->addRowError(self::ERROR_VALUE_IS_REQUIRED, $rowNumber, $attributeCode);

app/code/Magento/ImportExport/Model/Export/Entity/AbstractEav.php

@@ -289,7 +289,8 @@ protected function _addAttributeValuesToRow(\Magento\Framework\Model\AbstractMod
      * @param string $attributeCode An attribute code
      * @return bool Returns true if attribute is multiselect type
      */
-    private function isMultiselect($attributeCode) {
+    private function isMultiselect($attributeCode)
+    {
         return isset($this->_attributeTypes[$attributeCode])
             && $this->_attributeTypes[$attributeCode] === 'multiselect';
     }
@@ -303,11 +304,8 @@ private function isMultiselect($attributeCode) {
      */
     private function getAttributeValueById($attributeCode, $valueId)
     {
-        if (isset(
-                $this->_attributeValues[$attributeCode]
-            ) && isset(
-                $this->_attributeValues[$attributeCode][$valueId]
-            )
+        if (isset($this->_attributeValues[$attributeCode])
+            && isset($this->_attributeValues[$attributeCode][$valueId])
         ) {
             return $this->_attributeValues[$attributeCode][$valueId];
         }