Remove Ticket Types [SOLVED]

[netjess]

Hello,

In the Admin Ticket Type management /otrs/index.pl?Action=AdminType I can add ticket types but there is no method of removing ticket types.
I see that setting them to invalid removes them from the selection dropdown but why is there no method of removing them from the system?

Thanks.

[jojo]

because this will break data integrety of the database for existing tickets

[netjess]

Thank You.