Adjustment to Box 3+5

If we discover while doing the W2 process that a PDBA was set up as a benefit when it should not have been, is there any way to not include that DBA from Box 3+5 on the W2?  It was set to exclude Federal taxes, so it isn't in Box 1, but it is in box 3+5 but should not be.

I know on the Canadian T4 workbench you can make adjustments, but don't see any documentation on that for the W2.  Is it possible to add adjustments without doing it through special handling?

Thanks