If it helps at all, it looks like the credit utilization is being capped at the 4% rate for entities and nonresident individuals, rather than using the actual Oklahoma tax liability calculated on the 587-PTE. I agree with you that Lacerte is doing it wrong, and I can't come up with a workaround that gets the right presentation.

I can't replicate the credits' appearance on the OK Shareholder Summary.

Lacerte doesn't support OK credits particularly well, but this is worse than the normal lack of support.