I've seen some 'manual' tickets issued by incompetent travel agents taht are so questionable that when I presented the photo-copied of the ticket to some of the airlines concerned, they shrieked in horror.
1. Cathay Pacific gasped and said that they'd never accept such a ticket.
2. BA said that they'd never approve of such a ticket to be accepted.
3. AA laughed.
4. QF laughed even harder .. as they had no segments on the ticket.
The agent issued a ticket comprising of over 6 books. The fare was guaranteed by AA but yet the ticket was plated on BA. Throughout the entire ticket, there was no fare in the fare box. This amount was only put on the LAST book of tickets, in USD with total taxes. The ticket originated in Sweden. There was no breakdown of each cities tax. There was no fare calculation. No breakdown as to which was the connecting city and which was the stopover. (Hence the taxes cannot be totalled).
I had to get AA in Singapore to reissue the ticket for me as a favor as no one else would touch it. The ticket was eventually a printed ticket on AA.