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Compiler/TIEVM-VIENNARECT: Why is CM1 capacitor not connected by welding?

Part Number: TIEVM-VIENNARECT

Tool/software: TI C/C++ Compiler

When I was looking at the board of three-phase Vienna, I found that CM1 capacitor was not welded? There is a capacitor on the schematic diagram, but it is not in the real object. What is the reason?