Can an xPDI8 and an xPDO4 be added to an i2/b3 controller?

Issue

Clarification on documentation which does not indicate the addition of an xPDI8 and an xPDO4 being a valid combination to add to a b3 or i2 controller.  

Product Line

Andover Continuum

Environment

xP modules xPDI8 xPDO4

Cause

An addition to a existing i2 controller with an expansion port requires (4) more digital outputs and (8) more digital inputs. However, the documentation does not list the combination of the xPDO4 and xPDI8 as valid.

Resolution

That combination of expansion modules is not a tested, valid combination. The only tested combinations are those in the attached pages from the i2 Technical Reference