ACP2E-3172: Import button missing

Author: Chhandak.Barua

app/code/Magento/ImportExport/Controller/Adminhtml/Import/Validate.php

@@ -27,6 +27,11 @@ class Validate extends ImportResultController implements HttpPostActionInterface
      */
     private $import;
 
+    /**
+     * @var Import
+     */
+    private $_validateRowError = false;
+
     /**
      * Validate uploaded files action
      *
@@ -80,11 +85,11 @@ private function processValidationResult($validationResult, $resultBlock)
     {
         $import = $this->getImport();
         $errorAggregator = $import->getErrorAggregator();
-
         if ($import->getProcessedRowsCount()) {
             if ($validationResult) {
                 $totalError = $errorAggregator->getErrorsCount();
-                $totalRows = $import->getProcessedRowsCount() + $errorAggregator->getInvalidRowsCount();
+                $totalRows = $import->getProcessedRowsCount();
+                $this->validateRowError($errorAggregator, $totalRows);
                 $this->addMessageForValidResult($resultBlock, $totalError, $totalRows);
             } else {
                 $resultBlock->addError(
@@ -115,6 +120,24 @@ private function processValidationResult($validationResult, $resultBlock)
         }
     }
 
+    /**
+     * Validate row error.
+     *
+     * @param $errorAggregator
+     * @param $totalRows
+     * @return bool
+     */
+    private function validateRowError($errorAggregator, $totalRows): bool
+    {
+        $errors = $errorAggregator->getAllErrors();
+        $rowNumber = [];
+        foreach ($errors as $error) {
+            $rowNumber = array_unique([...$rowNumber , ...[$error->getRowNumber()]]);
+        }
+        (count($rowNumber) < $totalRows)? $this->_validateRowError = true : $this->_validateRowError = false;
+        return $this->_validateRowError;
+    }
+
     /**
      * Provides import model.
      *
@@ -163,7 +186,7 @@ private function addMessageToSkipErrors(Result $resultBlock)
      */
     private function addMessageForValidResult(Result $resultBlock, $totalError, $totalRows)
     {
-        if ($this->getImport()->isImportAllowed() && $totalRows >= $totalError) {
+        if ($this->getImport()->isImportAllowed() && ($totalRows > $totalError || $this->_validateRowError)) {
             $resultBlock->addSuccess(__('File is valid! To start import process press "Import" button'), true);
         } else {
             $resultBlock->addError(__('The file is valid, but we can\'t import it for some reason.'));