Disputes
Chargeback-to-transaction ratio
亦有： CB ratio
Monthly ratio of disputes to sales, calculated per MID; the primary metric governing entry to VAMP, ECP, and other monitoring programmes.
相關詞彙
VAMP (Visa Acquirer Monitoring Program)
Visa 監察收單機構投資組合是否存在過度欺詐和爭議的總體計劃，將於 2025 年取代舊有的 VDMP 和 VFMP 閾值。
Mastercard Excessive Chargeback Program
Mastercard 計劃分為兩個層級（ECM 為 100 宗爭議和 1.5% 比率，HECM 為 300 宗爭議和 3.0% 比率），每月對商戶處以罰款，直至問題解決。
Chargeback
A forced reversal of a card payment initiated by the cardholder's issuing bank.