Before starting this phase, it is advisable to pre-
pare it on paper.
• Write down the input message and
separate it into fields.
• Mark each field with a number from 1 to
5 maximum starting at the left hand
side of the message.
• Enter the number of fields resulting from
the division of the input message
including the fields which do not require
transmission.
• Define each necessary field using the
Phase C1 selections.
R44-2021
PHASE C0
DIVIDE THE INPUT
MESSAGE INTO FIELDS
EDITING MODE
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