[otrs] Clever OTRS =)

Happy New Year dear OTRS users ;-) Under the end of the year I have a following task - it would be great for me that otrs create ticket only in that case if it satisfies to following points: - responsible - theme - freetext fields etc.. I.e. until user will not correctly specify a theme of the ticket or responsible ticket it is not created. It's possible in OTRS? Thanks in advance. -- Best regards, Andrey Gazizov ReTN