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title: "FIX 5.0 SP2 EP292: LegMarketDisruptionFallbackOpenUnits <41478> field – FIX Dictionary – Onix Solutions"
description: "<meta name=\"description\" content=\"LegMarketDisruptionFallbackOpenUnits&lt;41478&gt; field &ndash; FIX 5.0 SP2 EP292, FIX protocol version FIX 5.0 SP2 EP292\" /> <meta name=\"keywords\" content=\"field, LegMarketDisruptionFallbackOpenUnits, TagNum=41478, FIX 5.0 SP2 EP292, FIX Protocol, FIX dictionary\" />"
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# LegMarketDisruptionFallbackOpenUnits <41478> field

## FIX 5.0 SP2 EP292

### Description

 Type: [Qty](https://www.onixs.biz/fix-dictionary/5.0.sp2.ep292/index.html#Qty)

 If there are multiple underlying assets, this specifies the number of units (index or securities) that constitute the underlier of the swap. In the case of a basket swap, this is used to reference both the number of basket units, and the number of each asset components of the basket when these are expressed in absolute terms.

### Used In

- [<LegMarketDisruptionFallbackReferencePriceGrp>](https://www.onixs.biz/fix-dictionary/5.0.sp2.ep292/compBlock_LegMarketDisruptionFallbackReferencePriceGrp.html)

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