Notations

Data attributes and Format

Notation	Definition
A	Alphabetic characters
N	Numeric characters
AN	Alphabetic and numeric characters
ANS	Alphabetic, numeric and special characters
8	Fixed length of 8 characters
..50	Variable length of up to 50 characters
DD	Day
MM	Month
YYYY	Year
HH	Hour
MM	Minute
SS	Second

Occurances

Notation	Definition
M	Mandatory. Required to be present in the message
O	Optional. Not required, but can be provided by the requester to fulfil desired use case
C	Conditional. Required under specific conditions, described for particular data element