> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.digitalpurchaseorder.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Suppliers & Vendors with the PSL+ Integration

Suppliers and vendors can synchronize between DPO and PSL+. However, there are some important best practices to follow.

###### Recommended Supplier Setup


Whenever possible, set up vendors in **PSL+ first**.
PSL+ contains additional vendor information, including tax-related information that is not available in DPO.

###### Suppliers Created in DPO


Depending on the **P.O. Book settings and user permissions**, suppliers can also be created directly in DPO.

There are two ways a supplier can be created:

1. **While creating a P.O.** – If supplier creation is enabled for the P.O. Book, users can create a new supplier directly during the P.O. creation process.
2. **Through Supplier Management** – Selected users can be given a dedicated [**user role**](https://help.digitalpurchaseorder.com/en/article/suppliers-12mctxs/) that allows them to manage suppliers in DPO without requiring access to all administrative settings.

When a newly created supplier is used on a P.O., the supplier is synchronized with **PSL+ as part of the P.O. synchronization**.

| Best Practice: Where possible, create and maintain suppliers in PSL+ first, as PSL+ contains additional vendor information required for accounting.



![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/screenshot-2026-08-28-at-13335_rqc83h.png =983xauto)


###### Best Practices


* Create vendors in **PSL+ early** whenever possible.
* Avoid bulk-importing suppliers directly into DPO for a PSL+-integrated book.
* Enter only **one primary email address** per supplier in DPO.
* Default coding configured on a PSL+ vendor record does not automatically populate P.O. or invoice transactions in DPO.

###### Supplier Not Appearing in DPO


If a supplier created in **PSL+** is not visible in DPO, this may be because the DPO book is configured to require certain supplier information, such as an **address or email address**.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/image_1yv2zak.png =1105xauto)


Check the following:

1. Check that the supplier in **PSL+** has a complete address, including:
   * **Street**
   * **ZIP / Postal Code**
   * **City**
   * **Country**
2. Make sure the supplier has a valid **email address**.
3. Clear the **integration-related cache**.
4. Refresh DPO.
5. If the supplier is still not visible, contact your **DPO Administrator or Support**.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/image_n579ij.png =1051xauto)
### Handling Duplicate Suppliers
### 

If a supplier has accidentally been created more than once, the duplicate supplier should be made **inactive in PSL+** to prevent it from being used for new P.O.s.

1. Identify which supplier record should remain as the **correct supplier**.
2. Set the duplicate supplier to **inactive in PSL+**. This will also make the supplier **inactive in DPO**.

![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/image_1r9zayi.png)

3. If existing P.O.s were created using the duplicate supplier, open the affected P.O.s in DPO.
4. **Amend each P.O.** and change the supplier to the correct supplier.
5. Complete the amendment and approval process as required.

|| Important: Making the duplicate supplier inactive does not automatically move existing P.O.s to the correct supplier. Any affected P.O.s must be amended in DPO and assigned to the correct supplier.


${color}[#0d5068](**Questions or need help?**)
*Our customer support is always available to help with any questions or setup assistance*

**Contact us**
**Email**: [support@digitalpurchaseorder.com](mailto:support@digitalpurchaseorder.com)
Support: +1 888 376 7254
Support Int'l: +44 20 331 88 338
Berlin Office: +49 (0)30 55 572 5956

${color}[#082834](Or book a personalized support call)
We look forward to hearing from you.