This is a big drama, and I am sorry to have to tell you that there is no easy way around it.
The full dismantle/rebuild this will require is no small task. I rebuilt my similar model last year, and perhaps a peruse of my thread 'Pat's Engine Overhaul' will give you a better idea of what it entails.
The only parts you will be able to leave undisturbed are the cylinder heads, but you should be able to leave the gearbox intact if you separate the case halves separately.
And check out the prices of the (German manufactured) head gaskets, as they are a shocker.
I had confidence doing this job myself as I have owned and worked on Ducatis since 1974, and even though I wasn't familiar with the internals of this specific model, it is only a more-complex evolution of previous models.
Paying a mechanic to do this for you will be expensive. The only way to offset that cost would be to carry out improvements while you are at it.
Doing it yourself, without experience, is risky. You will learn a lot, but you kinda need to know all that before you start.
Sorry to sound negative, but I am just giving you a realistic opinion based on experience.
Very sad that this happened. It is not a common weakness. I have only ever encountered this when assembly has been careless, not realising the water pump coupling needs to be lined up.
I hope you find your way through this calamity.

The full dismantle/rebuild this will require is no small task. I rebuilt my similar model last year, and perhaps a peruse of my thread 'Pat's Engine Overhaul' will give you a better idea of what it entails.
The only parts you will be able to leave undisturbed are the cylinder heads, but you should be able to leave the gearbox intact if you separate the case halves separately.
And check out the prices of the (German manufactured) head gaskets, as they are a shocker.
I had confidence doing this job myself as I have owned and worked on Ducatis since 1974, and even though I wasn't familiar with the internals of this specific model, it is only a more-complex evolution of previous models.
Paying a mechanic to do this for you will be expensive. The only way to offset that cost would be to carry out improvements while you are at it.
Doing it yourself, without experience, is risky. You will learn a lot, but you kinda need to know all that before you start.
Sorry to sound negative, but I am just giving you a realistic opinion based on experience.
Very sad that this happened. It is not a common weakness. I have only ever encountered this when assembly has been careless, not realising the water pump coupling needs to be lined up.
I hope you find your way through this calamity.