I have tried printing a shipping label and am seeing an error returned:

You must specify at least one ID to print!


If you received this error when printing an order from Open Orders (Old) screen, then you will need to go to > Orders > Open Orders (Old) screen and click on the cog button on the right side of the screen.

Then on the first tab named Open Orders, please add a numeric value that is higher than 0 to Invoice / Shipping label batch size.

This should resolve the error.

Related articles:

Order Book Settings - Open Orders