Standardize a context type representing a Currency

[kriswest]

Enhancement Request

Create a context type that can be used to represent a Currency.

Use Case:

A Currency context type is needed in order to compose other context types (such as an Order, Trade, Valuation or Position). However, an issue has also been raised to standardize recommended formats for 'primitive' fields, which might include ISO currency codes which may negate the need for this context as part of other context types.

• Standardize recommended formats for 'primitive' Context fields #645

A Currency context type may also be useful as a independent type, allowing it to be broadcast as part of workflows involving FOREX, liquidity pools or pricing.

Contexts

Currency

Represents and individual Currency.

Details

Property	Type	Required	Example Value
type	string	Yes	'fdc3.currency'
name	string	No	'US Dollar'
ISOCODE *	string	No	'USD'

* ISOCODE should conform to 3 character alphabetic codes standardized as part of ISO 4217.

Example

const currency = {
    type: 'fdc3.currency',
    name: 'US Dollar',
    ISOCODE: "USD"
}

[nemery-flextrade]

Per my comment on #645 we need to consider minor currency codes as well

[kriswest]

@nemery-flextrade said:

Just commenting here for direct reference, I believe the consensus was that we expect only major currency to be communicated on the wire, conversions to minor currency should be the responsibility of the consuming system (where required)

#645 (comment)