ERROR(ORCAP-36041) Duplicate Pin Name

All pin names need to be unique ie: GND1, GND2, GND3 in this case.

I agree if the pintype is anything but power.  But, I have built hundreds of symbols where multiple pins can share a name if the pintype is power.

It is odd that pins 3 and 5 are not flagged as errors.  Verify that pin21 is in fact, power type.

CIS is designed to auto-connect these pins by their pin name to a net sharing the pinname.   

Double check pintype on pin21, update the symbol cache...

Good point. I haven't directly come across this issue before. I wish I could be more help.

Just a FYI.

I had seen many a designer get burned bad with using the power Pin type. These particular pin types are global and will generate a valid net based on the pin name even if they are not wired in on the schematic. On symbols it is far far safer to not use "Power Type Pins" but go with unique identifiers instead.

The other thing is that if you were to print out your schematic for say a design review and you had used power type pins but there was no wire connecting them. An engineer looking at the schematic would assume that those pins are not connected because there is no wire.

Under the hood though on the PCB the pins will get connected, if the pin has the same name which completely goes against the Schematic... Yikes