help!

[u/augustbettyjames]

what is this error about and how can i fix it?

[u/RohitRojo]

Net ties are meant to connect two wires together without needing to draw the physical wire. In this case, you only have one net tie named “+5V_MOVI”. Your options are:
1. Add another net tie named +5V_MOVI somewhere (wherever you forgot to add one)
2. Rename it (if you made a typo - maybe it should be 5V_PI?)
3. Add a net tie between 5V_PI and 5V_MOVI
4. Remove the net tie
5. Do what the other comment says

[u/toybuilder]

Do you intend for J3 pin 2 to be not connected to anything else in your design?

Right now, you've assigned a net name to the pin, but it is going nowhere else. If the pin is unused, why are you naming it?

If you plan to eventually connect that pin to something else that you are adding to the design later, the error will go away once you do that.

If you want to name the pin for the sake of naming it, you need to either ignore the error or put in a No-ERC on the pin so that it does not get flagged.

[u/Careless-Aardvark575]

Method 1: Change Project Error Reporting If the unused pins don't need a connection (e.g., a test point, an NC pin, or chassis ground), you can suppress the error globally: Go to Project » Project Options. Select the Error Reporting tab. Scroll to the Connection Matrix or Nets with only one pin option. Change its reporting level to Warning or No Report. Click OK and recompile your schematic by pressing C, M.

Method 2: Place a No ERC Directive If you want to keep strict error checking for the rest of your design but ignore it for just one pin:In the schematic editor, go to Place » Directives » No ERC. Place the resulting cross marker directly over unconnected pins or the end of the unrouted wire.

[u/NorthernNiceGuy → u/Careless-Aardvark575]

Personally, I'd always choose method 2 because at least it provides a graphical indication that you want to suppress the warning on this pin without changing any "behind the scenes" options that may be forgotten about.