impl files ¿how to do it?

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Imported from previous forum

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Hi!

This is about ¿how to extend attributes for an existing fixml message?

I read that the “impl” file is the right place to do it…but ¿how?

Just and example, I want to add “XreqQty” attribute in the MarketDataRequest. And then ¿how to do/what should I write it in the “fixml-marketdata-impl-5-0-sp2.xsd”?.

What I want is the MarketDataRequest msg with a new field.

I´ve been reading in forums, etc… but really I didn´t get the answer. I saw some FIXML extensions and all of them were done in the “base” files.

Thanks

3

Have you also looked in the FIX Specification, Volume 1 under FIXML Design Rules starting on page 29? For example, it says “The default version fixml-components-impl file simply redefines the components-base file. This is the file where modifications (restrictions or extensions) would be made to component blocks used in the FIX protocol.”

Hi!

This is about ¿how to extend attributes for an existing fixml message?

I read that the “impl” file is the right place to do it…but ¿how?

Just and example, I want to add “XreqQty” attribute in the MarketDataRequest. And then ¿how to do/what should I write it in the “fixml-marketdata-impl-5-0-sp2.xsd”?.

What I want is the MarketDataRequest msg with a new field.

I´ve been reading in forums, etc… but really I didn´t get the answer. I saw some FIXML extensions and all of them were done in the “base” files.

Thanks