Format: nLength: 6Fixed length
DE 73

Date, Action

Data element
73
Format
n
Length
6
Encoding type
fixed
Bitmap
Secondary

What it is

YYMMDD on which a requested action (e.g. file update) is to occur.

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