I am having troubles with adding a via inside a BGA cell. Previously I was able to add. But now it does not allow me to do so. Following error message was given by xPCB VX.1.
I am new to this software. So I think I may have enable something unknowingly.
Add 1-4 via failed for net GND when changing to layer 1
Placement Outline Bottom ; Bot; loc: (8.61, 5.17)(23.39, 61.94)
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