vtiger System requirements for PDF Maker
First at all, we need to say that this article is not only about PDF Maker System requirements but it is also use full for vtiger CRM requirements.
The most important requirement in the process of Activation, Deactivation or Reactivation license of PDF Maker is Internet connection to your server.
Now, php setting:
PHP up to 5.6 (we do not recommend PHP 7 because vtiger is not fully compatible with PHP 7 and you can have more issue with using) max_input_vars 10000 max_execution_time 1000 memory_limit = 512M post_max_size = 128M max_input_time = 120 upload_max_size = 5M