Problem:
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Mapping the proper N1 segment when more than one are received.



Solution:
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In general a partner will send N1 segments to identify different 
addresses for the Ship to and Bill to. The ship to will carry a 
qualifier ST and the bill to BT. We must map the N1 segment only once. 

To accomplish this we will map the N104 (Entity Identifier) to the 
order.cust-no. Use a formula to perform the logic necessary to choose 
the correct N1 segment. For example:


         if |element|[2] = "ST" then |currelem| else ""

Make sure the add/append switch on the element definition is set to 
append.

What happens is the following:

For each iteration of the N1 segment the formula will be executed each 
time appending the order.cust-no field with the result of the formula. 
When the ST is encountered the value in the N104 will be appended to 
order.cust-no. When the qualifier is not an ST then "" will be 
appended. The result after reading each N1 segment will be that the 
proper customer number will be in order.cust-no.

Note that you may have to assign a translation table for the customer 
number to change the inbound customer number to your internal customer 
number.