# Update existing document types

<p class="callout danger">This action requires the **"update document type"** permission.</p>

When updating a document type, all information, with the exception of the generator formula, can be changed.

<p class="callout danger">The generator formula must not be changed without consult. If a different document number is required, a new document type with the proper generator formula should be created.</p>

[![image.png](https://how-to-erp.dewesoft.com/uploads/images/gallery/2024-05/scaled-1680-/dWoimage.png)](https://how-to-erp.dewesoft.com/uploads/images/gallery/2024-05/dWoimage.png)

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