I like to take a card's title and parse it and place the results into custom fields:
Card Title example:
M7UA345332::dc046f426b0d43e397128a8ea2b2d796::Your submitted PLM Ticket has been received - System Generated
Take the first value before :: and place into the field and then take the 2nd value ::<2ndvalue>:: and place into custom field.
Thus:
Value 1: M7UA345332
Value 2: dc046f426b0d43e397128a8ea2b2d796
Value 3: Your submitted PLM Ticket has been received - System Generated