The CUX segment may be omitted for national exchanges. The CUX segment is mandatory for international exchanges.

This segment is used to provide the exchange rate related to the allowances or charges.

When specifying Reference and Target Currencies for international trade, one occurrence of CUX is all that is required. The reference currency is identified in the first occurrence of composite C504, with the target currency specified in the second occurrence of C504. The rate of exchange between the two is detailed in DE 5402.

The general rule for calculating rate of exchange is as follows;

Reference Currency multiplied by Rate = Target Currency.

Example :

CUX+2:GBP:11+3:BEF:4+44.20'

Dependency Notes :

C504: The second occurrence of this composite is only used if a target currency is being specified.

5402: The rate of exchange is only used if a target currency has been identified in the second occurrence of C504.

6348: These data elements are only used when a rate of exchange is provided in data element 5402. When a rate of exchange is provided then at least one currency rate base must be specified.

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