# Unable to find a reference to TargetGroups.Conditions

**URL:** <https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918>\
**Category:** Questions\
**Created:** [June 12, 2019, 8:18am UTC](https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918 "2019-06-12T08:18:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Krister.Johansson](https://avatars.discourse-cdn.com/v4/letter/k/f1d935/32.png) [@Krister.Johansson](https://forum.litium.com/u/Krister.Johansson)\
**Post date:** [June 12, 2019, 8:18am UTC](https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918/1 "2019-06-12T08:18:27Z")

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Unable to find a reference to

> Litium.Web.Customers.TargetGroups.Conditions

[Target groups](https://docs.litium.com/documentation/litium-documentation/customers/target-groups)

Litium version: 7.2

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**Author:** ![steve.redstorm](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.litium.com/steve.redstorm/32/14_2.png) [@steve.redstorm](https://forum.litium.com/u/steve.redstorm)\
**Post date:** [June 12, 2019, 8:47am UTC](https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918/2 "2019-06-12T08:47:28Z")

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You need to add Litium.Web.Application to your Litium.Accelerator references.

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**Author:** ![patric.forsgard](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.litium.com/patric.forsgard/32/10_2.png) [@patric.forsgard](https://forum.litium.com/u/patric.forsgard)\
**Post date:** [June 12, 2019, 4:02pm UTC](https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918/3 "2019-06-12T16:02:57Z")

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The `TargetGroupConditionBase<T>` that is used in the example is in one of the implementation assemblies of Litium that we not have backward compatibility on, better that you use `Litium.Web.Customers.TargetGroups.ITargetGroupCondition<T>` directly that we have backward compatibility on.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex030/uploads/litium/original/1X/12eddac3b8b661de1db86af10ac8151b571e6fb9.png) [@system](https://forum.litium.com/u/system)\
**Post date:** [July 10, 2019, 4:14pm UTC](https://forum.litium.com/t/unable-to-find-a-reference-to-targetgroups-conditions/918/4 "2019-07-10T16:14:21Z")

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