ENGCOM-3203: Patch 17865 2.3 develop #18639

Author: Stanislav Idolov

app/code/Magento/CatalogImportExport/Model/Import/Product/Validator.php

@@ -7,6 +7,7 @@
 
 use Magento\CatalogImportExport\Model\Import\Product;
 use Magento\Framework\Validator\AbstractValidator;
+use Magento\Catalog\Model\Product\Attribute\Backend\Sku;
 
 /**
  * Class Validator
@@ -69,6 +70,8 @@ protected function textValidation($attrCode, $type)
         $val = $this->string->cleanString($this->_rowData[$attrCode]);
         if ($type == 'text') {
             $valid = $this->string->strlen($val) < Product::DB_MAX_TEXT_LENGTH;
+        } else if ($attrCode == Product::COL_SKU) {
+            $valid = $this->string->strlen($val) <= SKU::SKU_MAX_LENGTH;
         } else {
             $valid = $this->string->strlen($val) < Product::DB_MAX_VARCHAR_LENGTH;
         }
@@ -341,4 +344,4 @@ public function init($context)
             $validator->init($context);
         }
     }
-}
+}