> For the complete documentation index, see [llms.txt](https://docs.magecomp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.magecomp.com/magento-2-custom-order-number-extension/configuration.md).

# Configuration

Once the extension is installed successfully, go to **Stores>Configuration** to configure the extension for use.

<figure><img src="/files/k828hf2b4HkPrymE45LF" alt=""><figcaption></figcaption></figure>

**Enable:** Enable or Disable the extension from here. Set it as enabled to use the

features of the extension.

**Order**

**Prefix:** Admin can add prefix alphabet characters from here. Special characters are not allowed.

**Start Counter From:** Admin will have to add a custom counter number from where the order number can start.

**Postfix:**  Admin can add postfix alphabet characters from here. Special characters are not allowed.

<figure><img src="/files/Sf3mTaKhcilRC2etAfyP" alt=""><figcaption></figcaption></figure>

**Invoice**

**Prefix:** Admin can add prefix alphabet characters from here. Special characters are not allowed.

**Start Counter From:** Admin will have to add a custom counter number from where the invoice number can start.

**Postfix:**  Admin can add postfix alphabet characters from here. Special characters are not allowed.

**Shipment**

**Prefix:** Admin can add prefix alphabet characters from here. Special characters are not allowed.

**Start Counter From:** Admin will have to add a custom counter number from where the shpment number can start.

**Postfix:**  Admin can add postfix alphabet characters from here. Special characters are not allowed.

<figure><img src="/files/48oBiwOhStljvJPGoAn0" alt=""><figcaption></figcaption></figure>

**Credit Memo**

**Prefix:** Admin can add prefix alphabet characters from here. Special characters are not allowed.

**Start Counter From:** Admin will have to add a custom counter number from where the credit memo number can start.

**Postfix:**  Admin can add postfix alphabet characters from here. Special characters are not allowed.