Migration 4.2. 4.4

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Imported from previous forum

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Any one have a good document that would assit in migration from 4.2 to 4.4 esp the mapping of fields.

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Any one have a good document that would assit in migration from 4.2 to
4.4 esp the mapping of fields.

Hi Ankit,

in vol. 6 of the FIX 4.4 spec there is a section about replaced features. The most important one for me is that they dropped the ExecTransType field from ExecutionReports:

FIX 4.2 (ExecTransType, ExecType) → FIX 4.4 ExecType
(Partial Fill, NEW) → Trade
(Fill, NEW) → Trade
(, CORRECT) → TradeCorrect
(, CANCEL) → TradeCancel

This already happend at FIX 4.3 and makes things clearer IMHO.

In general, FIX 4.4 is a super-set of FIX 4.2. There are couple of new messages and new fields in existing messages, but it would never happen that a FIX 4.2 tag is used in a different way in FIX 4.4. The old tag value is simply not used any longer, and a new tag value for a new feature is choosen.

So you should not expect any imcompatibilities (except name changes) at the tag and message level.

Of course, my view is definitely restricted. Therefore, it would good to know which message types you currently use/intend to migrate.

Cheers, Jörg