# Test Litium.Accelerator Mapping error

**URL:** <https://forum.litium.com/t/test-litium-accelerator-mapping-error/725>\
**Category:** Questions\
**Created:** [March 19, 2019, 9:55am UTC](https://forum.litium.com/t/test-litium-accelerator-mapping-error/725 "2019-03-19T09:55:35Z")\
**Posts on this page:** 2\
**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:** [March 19, 2019, 9:55am UTC](https://forum.litium.com/t/test-litium-accelerator-mapping-error/725/1 "2019-03-19T09:55:35Z")

</div>

When adding `Litium.Accelerator` to my TEST project I get this error.

```auto

Mapping types:
WebsiteEntity -> Website
Litium.Application.Websites.Data.WebsiteEntity -> Litium.Websites.Website

Type Map configuration:
WebsiteEntity -> Website
Litium.Application.Websites.Data.WebsiteEntity -> Litium.Websites.Website

Destination Member:
Item

---- Litium.FieldFramework.FieldFrameworkException : Field with type 'FilterFields' does not match any field metadata.

```

Litium version: 7.1

---

<div class="post-metadata">

**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:** [March 19, 2019, 10:32am UTC](https://forum.litium.com/t/test-litium-accelerator-mapping-error/725/2 "2019-03-19T10:32:32Z")

</div>

You probably missing the reference from your test project to the project you have the filter type created in