How to edit the Payer's state ID number? Field cannot be changed

Are you sure it is asking for the state ID and not the zip code? 

Please revisit the 1099 and check the numbers. 

KrisD15, thank you for your prompt response.  I finally figured it out.  On my 1099R from Vanguard, there is a Payer's State Number field.   I thought I imported this form but I may have done it manually.  The last two digits were not there.  So by going back to wherever I entered Vanguard income, I was able to add the two digits there.  And then I was able to file my taxes.  

So now I can close out this question.  Not sure I know how to do that but will try.

Thanks again ...