Electronic – Multichannel design in a Multisheet hierarchy project (Altium)

altium

I'm working on another design that has multiple channels for a few circuits with in a multisheet design in Altium Designer.

I have a top sheet that contains all my sub systems as sheet symbols. One of the sheet symbols is for motor control signals and sensors. This sheet contains two sheet symbols setup as multichannel sheets. When I compile the project I get the multiple top level document error. I have been working for about two hours trying to resolve this issue reading through the Altium wiki but I can't seem to figure out how to fix it. I am unsure whether or not I am allowed to have sub sheets with their own sub sheets, the example in the Altium wiki leads me to believe I can but so far I am unable to get the project to compile this way. Is there a way to formally set which schematic sheet is the top sheet for the project? I think that might be what I need to do but I can't seem to find the option within Altium or from googling around. Anyone here have any idea?

Best Answer

Figured out a workaroud: Made the sheet containing the channel sheets the top sheet by adding sheet symbols for the two other subsystems in the design.

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