Deterministic dividend/rights/split entitlement math per record date for a single position, under the ISO 20022 corporate-action field set carried by DTCC Important Notice 23890-26's legacy corporate-actions message format decommission. entitlement = position_qty × ratio_or_rate, with rounding/proration rules per corporate-action type, all caller-supplied, no security-master lookup, no market-data fetch. This is entitlement math only; message-shape validation is a separate node, DTC CA ISO 20022 message validator (art-546), which chains into this node's input.
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Corporate Action Entitlement Fields
DVCA (cash div, cash rate) or DVSE/RHDI/SPLF/SPLR (share ratio).
Shares held as of record date.
Cash rate per share (DVCA) or share ratio (all others).