D99A Code List 2017

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A
Self explanatory.
B
Self explanatory.
C
Self explanatory.
D
Ante Meridiem (forenoon).
E
Post Meridiem (afternoon).
F
Self explanatory.
G
The production period that a product will be built such as 1st shift or 3rd shift.
H
Self explanatory.
Y
Used to cancel or override a previous pattern.
ZZZ
Despatch pattern timing according to agreement.