@cfxlabsinc/b2b-services
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    Variable WITHDRAWAL_RAIL_METHODSConst

    WITHDRAWAL_RAIL_METHODS: readonly [
        "AF_BANK",
        "AF_MOMO",
        "SPEI",
        "SWIFT",
        "ACH_CREDIT",
        "INSTANT",
        "ACH_DEBIT",
        "FEDWIRE_DRAWDOWN",
        "FEDWIRE",
        "BLOCKCHAIN",
    ] = ...

    The rails a wd_ withdrawal can settle over. Every one of them settles on-chain asynchronously whichever direction the money went, which is the only thing still read off this list — the admin dashboard's workflow strip.

    NOT the way to ask "is this a withdrawal": dataSource answers that exactly (see isWithdrawalDebitLeg), and five rails here — FEDWIRE, SWIFT, ACH_CREDIT, ACH_DEBIT, BLOCKCHAIN — carry deposits too.