--- title: component block – FIX 5.0 SP1 – FIX Dictionary – Onix Solutions description: component block – FIX 5.0 SP1 – 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 SP1 – FIX Dictionary | Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 5.0 SP1 \| Home FIX 5.0 SP1 : component block Structure \| Used In Description Structure Tag Field Name Req'd Comments 1330 UnderlyingLegSymbol N 1331 UnderlyingLegSymbolSfx N 1332 UnderlyingLegSecurityID N 1333 UnderlyingLegSecurityIDSource N Component Block - N 1344 UnderlyingLegCFICode N 1337 UnderlyingLegSecurityType N 1338 UnderlyingLegSecuritySubType N 1339 UnderlyingLegMaturityMonthYear N 1345 UnderlyingLegMaturityDate N 1405 UnderlyingLegMaturityTime N 1340 UnderlyingLegStrikePrice N 1391 UnderlyingLegOptAttribute N 1343 UnderlyingLegPutOrCall N 1341 UnderlyingLegSecurityExchange N 1392 UnderlyingLegSecurityDesc N Used In | | --- | | ![](https://www.onixs.biz/hs-fs/hubfs/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.sp1/compblock_underlyingleginstrument.html#) [OnixS ](https://www.onixs.biz/) Menu --- --- [OnixS ](https://www.onixs.biz/) ### Search the site Search