Mapping elements

On inbound maps, you can have multiple unconditional maps of a particular element. On outbound maps, only one mapping is allowed for a particular element. For example, a field such as the Purchase Order Number could populate multiple fields in multiple records on an inbound map. However, on an outbound map, only one BEG 03 can be generated.

Trading-partner-specific mapping varies for inbound and outbound maps, and for segments and elements. Table 14-1 and Table 14-2 illustrate what happens for each type of trading partner-specific mapping:

**Table 14-1: Methods to use for mapping types**
If mapping	Method used
Inbound Segment	Single; only one occurrence allowed
Outbound Element	Single; only one occurrence allowed
Inbound Map Flow	Multiple; many occurrences allowed
Inbound Element	Multiple; many occurrences allowed
Outbound Segment	Multiple; many occurrences allowed

**Table 14-2: Trading partner-specific mapping**
Method used	Mapping assignments	Trading-partner-specific	Other trading partners
Method Used	Mapping Assignments	Trading-partner-specific	Other Trading Partners
Single	ALL TradePartner	Ignore	Execute
	Trading Partner Owning	Execute	Ignore
Single	ALL TradePartner	Ignore	Execute
	Trading Partner Owning	Ignore	Ignore
Multiple	ALL TradePartner	Execute	Execute
	Trading Partner Owning	Execute	Ignore
Multiple	ALL TradePartner	Ignore	Execute
	Trading Partner Owning	Ignore	Ignore

Inbound maps can have only one occurrence of a segment on a single level, but they can have multiple elements mapped to several fields. Outbound maps can have multiple copies of a segment on one level, but only one element may be mapped per segment.