2.6.1.2.1.1.3. This table does not contain unique column

If you encounter the error "This table does not contain a unique column. Changing the grid, checking the box, editing, copying, and deleting are not available" while working with a database via phpMyAdmin, you need to execute an SQL query to the database:

ALTER TABLE TABLE_NAME ADD newid INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST;

Instead of table_name, enter the name of the problematic table (without parentheses or quotation marks).