# AssetLeg - [OpenAPI fragment](https://www.lusid.com/docs/api/lusid/schemas/AssetLeg.json) - [Rendered page](https://www.lusid.com/docs/api/lusid/schemas/AssetLeg) The underlying instrument representing one side of the TRS and its pay-receive direction. Note that TRS currently only supports an asset of Bond or ComplexBond, no other instruments are allowed. Support for additional instrument types will be added in the future. ## Referenced schemas - [LusidInstrument](https://www.lusid.com/docs/api/lusid/schemas/LusidInstrument.txt) ## Used by schemas - [TotalReturnSwap](https://www.lusid.com/docs/api/lusid/schemas/TotalReturnSwap.txt) [< Schemas](https://www.lusid.com/docs/api/lusid/schemas/llms.txt)