Hi David - I am not familiar with standardized processes around Supplier Contract Breach. If you can point me to some materials which describe any standards, then I may be able to help further. Ariba provides a very flexible way to manage processes around contracting via a Contract Workspace and a supplier via a Supplier Workspace. Within those workspaces you can model any processes based on conditionality.
Have you outlined the process steps internally already or are you looking for examples of where someone else has done this?