trying to file form 8824 line 7 and 8, related party in a 1031 "like-kind exchange" I sold an investment property for $30,000 the proceeds went directly to an accredited exchange company. I met all the date requirements, I purchased property from my sister at FMV that meets all the requirements for the "like-kind exchange" and used the money placed in the exchange and an additional $370,000 to pay her for the property. Is this a related party exchange? and if so, her tax consultant has told her that it is not and that she does not have to supply her social security number. So how do I complete that section of line 8 where it asks for her SS# if she will not supply her SS#? As far as the tax program, she is refusing to supply ss#. How do I put that into my form 8824 so I can e-file it, right now when the field for the s# is left blank, the field is red and the program will not accept it.