Scheme code system · Discover
Secondary source30
Format error
The receiving system could not accept the message format.
- Outcome
- Technical
- Code system
- Discover
- Raw format
- Two-character numeric or alphanumeric raw response code
Operational context
No universal retry instruction encoded
Discover wording mapped to the SchemeLens “Format error” concept.
Use the current scheme, provider, transaction, and advice-code rules; the raw response value alone may be insufficient for a retry decision.
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 |
|---|---|---|
| Format error | Direct semantic match | Discover wording mapped to the SchemeLens “Format error” concept. |
Namespace check
The same raw value exists elsewhere
- Mastercard 30Format error
- UnionPay 30Message format error
Provenance
Sources used for this record
- Worldpay: Raw response codesOfficial for Worldpay raw-response behaviour; secondary evidence for the underlying scheme definition.Live provider reference, verified 27 July 2026
SchemeLens keeps source wording, normalized concepts, and operational guidance separate so later evidence can be added without rewriting the raw record.