While the FIX Session Protocol is based upon "Tag=Value" syntax for the Standard Header, Standard Trailer, and the Administrative Messages which make up the FIX Session Protocol, it is possible to send FIXML or other XMLbased content ("payload") via the FIX Session Protocol. The FIXML or other XML-based content is enclosed in a traditional "Tag=Value" FIX standard header via the standard header's XmlDataLen and XmlData fields and followed by the "Tag=Value" FIX standard trailer.
| Tag | Field Name | FIXML | Req'd | Comments | |||
|---|---|---|---|---|---|---|---|
| <Standard Message Header> | Y | MsgType = n | |||||
| <Standard Message Trailer> | Y | ||||||
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