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Update payment.md

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Michael Pinter
2022-09-20 15:50:49 -05:00
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content/references/protocol-reference/transactions/transaction-types/payment.md
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@@ -123,7 +123,7 @@ The XRP Ledger defines the "quality" of a currency exchange as the ratio of the
The [`tfLimitQuality` flag](#payment-flags) allows you to set a minimum quality of conversions that you are willing to take. This limit quality is defined as the destination `Amount` divided by the `SendMax` amount (the numeric amounts only, regardless of currency). When set, the payment processing engine avoids using any paths whose quality (conversion rate) is worse (numerically lower) than the limit quality.
By itself, the `tfLimitQuality` flag reduces the number of situations in which a transaction can succeed. Specifically, it rejects payments where some part of the payment uses an unfavorable conversion, even if the overall average *average* quality of conversions in the payment is equal or better than the limit quality. If a payment is rejected in this way, the [transaction result](transaction-results.html) is `tecPATH_DRY`.
By itself, the `tfLimitQuality` flag reduces the number of situations in which a transaction can succeed. Specifically, it rejects payments where some part of the payment uses an unfavorable conversion, even if the overall *average* quality of conversions in the payment is equal or better than the limit quality. If a payment is rejected in this way, the [transaction result](transaction-results.html) is `tecPATH_DRY`.
Consider the following example. If I am trying to send you 100 Chinese Yuan (`Amount` = 100 CNY) for 20 United States dollars (`SendMax` = 20 USD) or less, then the limit quality is `5`. Imagine one trader is offering ¥95 for $15 (a ratio of about `6.3` CNY per USD), but the next best offer in the market is ¥5 for $2 (a ratio of `2.5` CNY per USD). If I were to take both offers to send you 100 CNY, then it would cost me 17 USD, for an average quality of about `5.9`.