Following microsoft article 314649 " Windows Server 2003 adprep/forestprep Command Causes Mangles Attributes..."
My problem fits unders scenario 2 of this article. (Exchange 2000 Schema Changes are Installed Before You Run the Win2k3 adprep /forestprep Command)
I created the "interorgpersonprevent.ldf" file and when I run the ldifde command to implement the changes it fails with the following text
C:\IOP>ldifde -i -f interorgpersonprevent.ldf -v -c DC=X "DC=united-directories,DC=com"
Connecting to "uddc01.united-directories.com"
Logging in as current user using SSPI
Importing directory from file "interorgpersonprevent.ldf"
Error occured during initialization
File operation failure
0 entries modified successfully.
An error has occurred in the program