diff --git a/core/class/declarationtva.class.php b/core/class/declarationtva.class.php
index 147cf40..43e5efa 100644
--- a/core/class/declarationtva.class.php
+++ b/core/class/declarationtva.class.php
@@ -902,6 +902,30 @@ class DeclarationTVA
             return false;
         }
         
+        // Check if accounting entries already exist for this declaration
+        $existing_entries_sql = "SELECT COUNT(*) as count FROM " . MAIN_DB_PREFIX . "accounting_bookkeeping 
+                                 WHERE doc_ref = '" . $this->db->escape($this->declaration_name) . "' 
+                                 AND entity = " . $this->entity;
+        $existing_result = $this->db->query($existing_entries_sql);
+        if ($existing_result && $this->db->num_rows($existing_result) > 0) {
+            $existing_obj = $this->db->fetch_object($existing_result);
+            if ($existing_obj->count > 0) {
+                error_log("DEBUG: Found " . $existing_obj->count . " existing accounting entries for declaration " . $this->declaration_name);
+                error_log("DEBUG: Deleting existing entries to prevent duplicates");
+                
+                // Delete existing entries to prevent duplicates
+                $delete_sql = "DELETE FROM " . MAIN_DB_PREFIX . "accounting_bookkeeping 
+                               WHERE doc_ref = '" . $this->db->escape($this->declaration_name) . "' 
+                               AND entity = " . $this->entity;
+                $delete_result = $this->db->query($delete_sql);
+                if ($delete_result) {
+                    error_log("DEBUG: Successfully deleted " . $existing_obj->count . " existing entries");
+                } else {
+                    error_log("DEBUG: Failed to delete existing entries: " . $this->db->lasterror());
+                }
+            }
+        }
+        
         // Create a declaration object with the fetched data
         $declaration = new stdClass();
         $declaration->rowid = $this->rowid;