body: I'm looking at a document and I am confused if the contract is valid. Hopefully my over simplified example will help.
  
  
  One page one of the document it has The Amendment of Operating Agreement ("Amendedment") is dated \_\_\_\_\_\_\_\_\_\_\_\_\_\_, 2012.
  
  
  The section with \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ is not filled out.
  
  
  The contract is then signed and dated by three parties.
  
  
  Mr Party One
  6/1/2012
  
  
  Mr Party Two
  6/1/2012
  
  
  Mr Party Three
  6/1/
  
  
  That's correct Mr Party three did not place a year. So I'm confused as to how this contract could be be valid based on no clear starting date with the three parties that's needed. 
  
  
  
title: How does a Contract work with Effective Date not filled in but has document signed and dated but not by all parties