For some implementations, you may enter the Dun and Bradstreet D-U-N-S number1 information for your customer and their domestic and global ultimate companies D-U-N-S numbers:
1From http://www.dnb.com: "A D&B® D-U-N-S® Number is a unique nine-digit sequence recognized as the universal standard for identifying and keeping track of over 100 million businesses worldwide. "