ISO 8583 DE Reference
Format: anLength: 3Fixed length
DE 40

Service Restriction Code

Data element
40
Format
an
Length
3
Encoding type
fixed
Bitmap
Primary

What it is

The service code from the magnetic stripe / chip, carried standalone (also embedded in DE 35).

Specification reference

Defined in ISO 8583:1987 (base). Card networks publish their own dialect tables (Visa BASE I / V.I.P., Mastercard CIS) that refine formats, lengths, and — for private-use elements — the entire layout. Always confirm against the interface specification you implement.

Decode & build this element

🎫Service Code Decoder
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