Off grid pin message at Altium17
This error (or warning, depending on your settings) appears when the pins of a component do not lay precisely on the document grid. This is most commonly caused by a different grid being used to draw the schematic than what was used to draw the component symbol in the library. I suggest going into your SCH Library, find the component in question, change the grid to your standard schematic document grid, and redraw the component (or at least move the pins so that they sit perfectly on the grid). Then in your schematic document either re-add the component or go to Tools --&gt; Update From Libraries and select the component to update.