Scheme code system · Visa
Official1A
Additional customer authentication required
The transaction requires additional customer authentication or identification.
- Outcome
- Verification
- Code system
- Visa
- Raw format
- Two-character numeric or alphanumeric action code
Operational context
Revalidate first
Visa Category 3 in the Europe and CEMEA regions: revalidate payment information before any permitted reattempt, up to 20 attempts in 30 days.
Explicit mapping
SchemeLens concepts
These links are editorial mappings, not replacements for the raw source value. The relation shows how closely the wording aligns.
| Concept | Relation | Mapping note |
|---|---|---|
| Additional authentication required | Direct semantic match | Visa wording mapped to the SchemeLens “Additional authentication required” concept. |
Namespace check
The same raw value exists elsewhere
- Discover 1ACustomer authentication required
- EBANX 1AAdditional cardholder authentication is required
Provenance
Sources used for this record
- Visa Developer: Request and Response Codes — Action CodeOfficial source for the published Visa action-code wording.Live web reference, verified 27 July 2026
- Visa: Visa Core Rules and Visa Product and Service RulesOfficial source for decline categories, qualifications, and merchant reattempt limits.April 2026, section 7.3.6.3
SchemeLens keeps source wording, normalized concepts, and operational guidance separate so later evidence can be added without rewriting the raw record.