--- title: component block – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions description: component block – FIX 5.0 SP2 – FIX Dictionary – Onix Solutions --- ![Dictionary icon](https://www.onixs.biz/hubfs/SIC_website_2020/images/interface/img-icon-book.svg) # component block – FIX 5.0 SP2 – FIX Dictionary | Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 5.0 SP2 \| Home FIX 5.0 SP2 : component block Structure \| Used In Description Structure Tag Field Name Req'd Comments 1309 NoTradingSessionRules N Allows trading rules to be expressed by trading session => 336 TradingSessionID N Identifier for the trading session Must be provided if NoTradingSessions > 0 Set to [N/A] if values are not specific to trading session => 625 TradingSessionSubID N Identifier for the trading session Set to [N/A] if values are not specific to trading session sub id => Component Block - N Contains trading rules specified at the trading session level Used In | | --- | | ![](https://www.onixs.biz/fix-dictionary/img/spacer.gif?height=5&name=spacer.gif) | - Follow OnixS - [Follow us on Twitter ](https://twitter.com/onixsbiz) - [Connect with us on LinkedIn ](https://www.linkedin.com/company/onix-solutions/) We track how people interact with our online web content and resources, and some of that tracking involves storing cookies on your device. By continuing to use our site you accept that you agree to this. For more details see our [Cookie usage, and Data Privacy and Protection Policies](https://www.onixs.biz/cookies-and-privacy.html). [Ok](https://www.onixs.biz/fix-dictionary/5.0.sp2/compblock_tradingsessionrulesgrp.html#) [OnixS ](https://www.onixs.biz/) Menu --- --- [OnixS ](https://www.onixs.biz/) ### Search the site Search