# Warnings before real-PCB transfer

Typical warnings before transferring a circuit to real-PCB:

- The value for a part in your circuit does not match an allowed real-life value for that part type. For example, a PP3 battery must have a voltage of 9V.
- Your circuit requires a power connector. (See Making hidden voltage supplies explicit.)

## See also:

- Warnings during real-PCB transfer
- Warnings after real-PCB transfer
- PCB warnings