MakerBot MethodX SR-30 is a proprietary soluble support material developed by Stratasys that is optimized to work extremely well with ABS due to its unique adhesion properties. It is compatible with the MakerBot MethodX 3D printer using the Support 2XA Extruder. Unlike PVA, which is simply water soluble, SR-30 requires additional equipment for dissolution.
A circulation tank and the Ecoworks Cleaning Agents are necessary items. For the full explanation, you can download the best practices here.