Format: anLength: ...120Variable (LLLVAR — 3-digit length prefix)
DE 54
Additional Amounts
What it is
Up to six 20-character amount structures: account type (2), amount type (2), currency (3), C/D indicator (1), amount (12) — balances, cashback, tips.
Example values
2040840D000000010000Cashback (40) of 100.00 USD debit against checking (20).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.