I was created "Manufacture" attribute with drop-down input field into "Product Attribute" of Admin and I want to add 300+ options into this attribute but in Magento 2.1.8 CE only allowing 21 options after save.
so please give me proper solution for that
you need to add below thing into .htacess file
php_value upload_max_filesize 10M
php_value max_input_nesting_level 128
php_value max_input_vars 7000
If htaccess thing not work then you need to modify into php.ini file.
If it works for you then mark as solution.