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7.4.3.1 Reference command number (NM)
Definition: This field contains the unique identifier for this particular command that should
be used by the various components for future referral to this command. This number is
generated by the originator of this command.
7.4.3.2 Response required (ID)
Definition: This field identifies the mode of synchronization that is to be used in relation to
the execution of the command. “Y” (Yes) means that the response is required immediately
after execution; “N” (No) response is not required at all. Refer to HL7 Table 0136 – Yes/no
indicator for valid values.
7.4.3.3 Parameters (ST)
Definition: This field identifies the parameters of the command (if they are not included in
separate segment[s]).