ISO 8583 DE Reference
Format: nLength: ..11Variable (LLVAR — 2-digit length prefix)
DE 32

Acquiring Institution Identification Code

Data element
32
Format
n
Length
..11
Encoding type
LLVAR
Bitmap
Primary

What it is

The acquirer ID identifies which member institution acquired the transaction — it drives settlement position calculation and appears again in reversals and chargebacks so the original acquirer can be found. Together with DE 33 it traces the acquiring path when intermediate processors forward messages.

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

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Related data elements

DE 33Forwarding Institution Identification CodeDE 100Receiving Institution Identification Code
← PreviousDE 31 Amount, Settlement Processing FeeNext →DE 33 Forwarding Institution Identification Code