Retirement tax questions

Turbo Tax REVIEW says theState/Payers state no. on my 1099-R is missing.  That is CORRECT  there is nothing on the 3 different forms I received from the tax payers I have accounts with.  I have called the state of Iowa and they have not given a "number",  I have used Turbo tax for 5 years. I looked and this form in previous years and it was not required!!!  I have spent almost 5 hours trying to obtain this number.  IS it absolutely required THIS year or can I ignore this number and move on? 

Richard C. 

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