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The authorizationMethod field on transaction webhooks carries the description string from the table below, not the numeric code. The values come from the card network’s point-of-service condition code (ISO 8583 DE25); the table maps each underlying code to the string you receive. Treat the field as an open-ended string: a value outside this table can appear if the network sends an unexpected code.

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Transaction events

See where these codes appear in the spend, collateral, and payment event payloads.