I am not able to create the custom message error to generate from one trigger.
I am getting same error as 'System error. Contact system administrator.' and in other condition getting pma.20059 where 20059 is given code in my trigger as well as message.properties and message-en.properties file.
Please help me how to get the error message as 'project is already tagged to other program', which is described in error code 2059.