Oklahoma Form 512S error on tax computation

[janice-mcclellan]

I'm getting an error on Line 2, Part One Section One income tax on Oklahoma 512S.  This is a non resident return, and the shareholder's do not execute a non-resident agreement.  Tax is paid by the corporation.  Line 2 is computing on it's own 4.75% of taxable income (which is correct).  I'm getting an error message saying it should be 6% of taxable income.  This is a software computation, I'm not entering the tax.  It tells me I can't override it and electronically file.  I don't understand why there is an error message.