Different pin assignment between two identical footprints

[Andrea_Simeoni]

I create two symbols that share the same footprint, for APB2 Honeywell sensor family:

Both have SDA signals on pin #5 and SCL on pin #6.
Look at the layout:

U12 has the I2C pins swapped! How is it possible?
I don’t see any error in the “Update PCB” log, and the following warnings:

Warning: Via connected to unknown net ().
Warning: No net found for component U9 pad 16 (no pin 16 in symbol).
Warning: No net found for component U9 pad MP (no pin MP in symbol).
Warning: No net found for component U9 pad 10 (no pin 10 in symbol).
Warning: No net found for component U9 pad 15 (no pin 15 in symbol).
Warning: No net found for component U9 pad MP (no pin MP in symbol).
Warning: No net found for component U4 pad 4 (no pin 4 in symbol).
Warning: No net found for component U3 pad 4 (no pin 4 in symbol).

are related to other components.
Also the ERC does not show any error/warning related to U12 and U12.

I’m lost since I don’t understand what can cause such a wrong assignment.
Any idea?

[mf_ibfeew]

No idea, but sounds like a curious problem.
Any chance to upload a small snippet as example project (best is to include the symbol as well as the FP library)?

[eelik]

You show only the hierarchical sheet of certain level, but these must be wired in a higher level and can be named there.

[Andrea_Simeoni]

Yeah, you’re right:

here I swapped the signals.
I didn’t check there since inside the sheet they were correct.

Is there a way to spot this kind of errors? I mean using a Kicad tool?

[eelik]

@Andrea_Simeoni

Is there a way to spot this kind of errors? I mean using a Kicad tool?

For this case, I don’t see how this could be spotted automatically. For KiCad these are just arbitrary names. It’s like with IC pins: you have to know what needs to be connected to what pin.