Specifying relations without vehicle constraint?

[henningms]

Hi there!

I might have missed something in the documentation regarding this, but it would be nice to be able to specify job relations but no vehicle constraint and have the solver figure out which vehicle would be best suited.

"These jobs needs to be on the same vehicle (and in this order), but doesn't matter which one of these 50 vehicles"

[reinterpretcat]

Hi,

currently, it is due to implementation constraints: each relation is mapped to specific route at the beginning which requires vehicle to be known.