DECODE THE ALLEGATION FIRST.

Why the hub is organized by allegation

Card networks maintain large rulebooks, and reason-code labels or mappings can change. DisputeOps Desk does not use a reason-code page as a thin glossary entry. Each page is scoped to the factual allegation, the merchant records that can answer it, and the points that should be verified against the current processor notice.

Your processor or acquiring bank may display a simplified category rather than the raw network code. That merchant-facing notice controls the immediate task. Record the deadline, exact allegation, amount, and requested evidence fields before using any general reference page.

Network-specific pages intentionally link outward to broader scenario and platform workflows rather than copying the same evidence checklist across dozens of URLs. That keeps “Visa 13.3,” “not as described evidence,” and “Shopify chargeback response” as three distinct search intents.