> 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-for-pm/installation-guide/adjust-namespace-settings.md).

# Adjust namespace settings

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**Note**

This step is only applicable in the development environment so does not need to be completed in any other systems in the landscape. 
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Enter transaction *SE03* and navigate to ‘Set System Change Option’.

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Double click on ‘Set System Change Option’ and find entry /TCTM/.

Change the modifiable drop down to ‘X Modifiable’.

<figure><img src="https://content.gitbook.com/content/qBP5jPBMU6aAm13aXMtE/blobs/kT3cPx2WecBt2j0LEEsK/image.png" alt=""><figcaption></figcaption></figure>

Change the modifiable flag for /TCTM/ to ‘Modifiable’ from ‘Not Modifiable’ and then press ‘Save’ and exit.