Saving headers with user-defined metadata
After the messages are split, they can be translated. The segments that were
stripped off, the ISA and possibly GS
, could be
required later. They are stored in the user-defined metadata of each split message.
These segments are stored as a keyed list whose value is the list of elements. The
user-defined metadata of each message that is generated by splitX12
contains an ISA
and possibly
a GS
. This depends on whether it was a group- or
transaction-level split.
This makes the ISA
and GS
header fields available to procedures later on. To
retrieve them:
set user_data [msgmetaget $mh USERDATA]
set isa_data [keylget user_data ISA]
set isa01 [lindex $isa_data 1]