i18n-ISSUE-212: Prevent the use of currency synonyms

6 PaymentCurrencyAmmount

http://www.w3.org/TR/payment-request/#paymentcurrencyamount

The currency identifier is defined to be ISO4217 codes though the
specification indicates that any string is considered valid. This means
that it would be possible to use currency synonyms. The use of synonyms
should be discouraged this section should use ISO4217 codes when ever
possible.



Steven Atkin, Ph.D.
STSM - Chief Globalization Architect
IBM Globalization Center of Competency
atkin@us.ibm.com
http://www-3.ibm.com/software/globalization/index.jsp