> For the complete documentation index, see [llms.txt](https://docs.theconfigteam.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.theconfigteam.com/prebilt-ewm/configuration-guide/customising-the-screen-layout/detailed-screen-fields-customisation/enhanced-uom-selection.md).

# Enhanced UoM selection

{% embed url="<https://www.youtube.com/watch?index=9&list=PL74nuGSklShkPfMTELqxruD4Qhedw_f_E&v=fRIRu6UvaaY>" %}

The PreBilt enhanced UoM selection can be used in any logical transaction step containing a UoM input field. This can be achieved by defining a Field Type as UOMS, then assigning the required parameters under the Extra Screen Elements node.

<figure><img src="https://1016750988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7lFTpSLijn44pippdL6u%2Fuploads%2Fgit-blob-24cc0b13ca4d01f25b208682bef2103fa0fc105a%2FEWM-UOMS%20field%20type%20assignment.png?alt=media" alt=""><figcaption><p>UOMS Field Type assignment</p></figcaption></figure>

This feature adds a button to the UoM field, which calls a popup screen with a user friendly interface and enriched data for UoM selection, as shown below:

<figure><img src="https://1016750988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7lFTpSLijn44pippdL6u%2Fuploads%2Fgit-blob-24a4fd943a2dabbe6c1376931b69cf144c3788a2%2FEWM-uom%20selection%20popup.PNG?alt=media" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Prerequisite**

To use Field Type UOMS, it must first be defined in maintenance view `/TCTM/VEWM_FLTYP`.
{% endhint %}

Please refer to [UOMS Screen Element and Parameters](/prebilt-ewm/configuration-guide/customising-the-screen-layout/detailed-screen-fields-customisation/defining-extra-screen-elements.md#uoms-screen-element-and-parameters) for the details on setting up the Extra Screen Element and Parameters associated with UOMS in a logical transaction step.