diff --git a/app/Abstracts/Import.php b/app/Abstracts/Import.php
index 54003fc60..4ccae7fc6 100644
--- a/app/Abstracts/Import.php
+++ b/app/Abstracts/Import.php
@@ -29,7 +29,15 @@ abstract class Import implements HasLocalePreference, ShouldQueue, SkipsEmptyRow
 
     public $user;
 
+    public $model;
+
     public $request_class = null;
+    
+    public $with_trashed = false;
+
+    public $columns = [];
+    
+    public $has_row = [];
 
     public function __construct()
     {
@@ -209,4 +217,41 @@ abstract class Import implements HasLocalePreference, ShouldQueue, SkipsEmptyRow
 
         return str_replace($dependent_rules, $batch_rules, $rules);
     }
+
+        //This function is used in import classes. If the data in the row exists in the database, it is returned.
+        public function hasRow($row)
+        {
+            // must be models and columns
+            if (empty($this->model) || empty($this->columns)) {
+                return false;
+            }
+    
+            /*  This function is called for each row. 
+                This check is done in order not to query again for each row. 
+                When the model to which the query is thrown changes, the new query should be discarded. 
+            */
+            if (! $this->has_row || ! $this->has_row instanceof $this->model) {
+                $this->has_row = $this->model::withoutEvents(function () {
+                    if ($this->with_trashed) {
+                        // This query should be used if there is no deleted_at field in the table or if the deleted data is to be retrieved.
+                        return $this->model::withTrashed()->get($this->columns)->each(function ($data) {
+                            $data->setAppends([]);
+                        });
+                    } else {
+                        return $this->model::get($this->columns)->each(function ($data) {
+                            $data->setAppends([]);
+                        });
+                    }
+                });
+            }
+    
+            $search_value = [];
+    
+            //In the model, the fields to be searched for the row are determined.
+            foreach ($this->columns as $key) {
+                $search_value[$key] = isset($row[$key]) ? $row[$key] : null;
+            }
+    
+            return in_array($search_value, $this->has_row->toArray());
+        }
 }
diff --git a/app/Imports/Banking/Transactions.php b/app/Imports/Banking/Transactions.php
index 3253d1be0..56505ea94 100644
--- a/app/Imports/Banking/Transactions.php
+++ b/app/Imports/Banking/Transactions.php
@@ -11,10 +11,20 @@ class Transactions extends Import
 {
     use TraitsTransactions;
 
+    public $model = Model::class;
+
     public $request_class = Request::class;
 
+    public $columns = [
+        'number',
+    ];
+
     public function model(array $row)
     {
+        if (self::hasRow($row)) {
+            return;
+        }
+
         return new Model($row);
     }
 
@@ -29,8 +39,15 @@ class Transactions extends Import
         $row['category_id'] = $this->getCategoryId($row, $real_type);
         $row['contact_id'] = $this->getContactId($row, $real_type);
         $row['document_id'] = $this->getDocumentId($row);
-        $row['parent_id'] = $this->getParentId($row);
+        $row['parent_id'] = $this->getParentId($row) ?? 0;
 
         return $row;
     }
+
+    public function prepareRules($rules): array
+    {
+        $rules['number'] = 'required|string';
+
+        return $rules;
+    }
 }