That really has me puzzled, unless maybe you have done some overrides with it that is causing some weirdness.

The IRS rejection error means your tax return does NOT have a 8962, but that it SHOULD have one.

Your return does have a 8962.

So either (a) it is an IRS error and it should not be rejecting, or (b) it is a Lacerte error because it is not including the 8962 with the e-file submission.

So unfortunately, I don't have a solution, other than mailing the tax return.  I wish I had a better answer.