Update Reference Exchange Rate

Rate Record ID. The primary key of the reference-exchange-rate record to edit, from the list row's record.id.

Rate Source. A read-only field taken from the record itself; the dropdown enum comes from ref rate_source.

Allowed values: FILE, MANUEL_CREATE (MANUEL CREATE), AUTO, COPY, CCASS (Auto Follow HKEX)

Channel / Change Type. A read-only field (disabled in edit mode); if multi-select, it is joined into a comma-separated string on submission. The dropdown enum comes from ref manual_forex_change_type, e.g. MANUAL_CURRENT/MANUAL_ACCOUNT/CCASS.

Allowed values: MANUAL_CURRENT (Spot rate), MANUAL_ACCOUNT (Ledger rate), CCASS

Base Currency. A read-only field (disabled when editing); defaults to the standard_money currency from atm_currency_config.

Other Currency. Read-only field (disabled in edit mode).

Record Date. A read-only field (disabled in edit mode); converted by the client to a YYYYMMDD-format string before submission.

Bid Rate. Must be > 0, with precision determined by the rate_precision returned by the getCurrencyRateAccuracy endpoint.

Offer Rate. Must be > 0, with precision determined by the rate_precision returned by the getCurrencyRateAccuracy endpoint.

Average Rate. Must be > 0, with precision determined by the rate_precision returned by the getCurrencyRateAccuracy endpoint.

Audit Context. Audit information attached automatically by the client; in the edit scenario it contains $behavior / $action='edit' / bid_rate / offer_rate / average_rate (the pre-edit old values).