> ## 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).

# P.O. Book Information - Old DPO Design

In the **P.O. Book Information** section, you manage the basic data of your project. This area serves as a central hub for all master data, including book names, invoice addresses, and book limits.

||| **Already using DPO's new design?** [You can find the corresponding article here](https://help.digitalpurchaseorder.com/en/article/supplier-merge-in-dpo-i12dxl/)

###### P.O. Book Information 
Behind the **P.O. Book Information** tab in the **Admin** section, you will find three options to manage your P.O. book:

* [**General P.O. Book Information**](#6-general-po-book-information) – Change your book name
* [**Invoice Address**](#6-invoice-address) – Enter and manage your invoicing address
* [**P.O. Book Limits**](#6-project-restrictions) – Adjust your storage, user, and P.O. limits



###### General P.O. Book Information
Here you enter the key data of your project:

***Project Name**** → *The official title of your project.
**Project Number** → A unique number for identification within the system.
**Project Duration** → The period during which the project is active – with an option for extension.


![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/screenshot-2025-10-06-at-15054_1lyewil.png =843xauto)


###### Invoice Address
Enter the address of the invoice recipient, including:

* Company, Street, ZIP Code, City, and Country
* Optional: Floor, Entrance, Additional Information


| Tip: The invoice address information is used in [PDF batches](https://digital-purchase-order.crisp.help/en/article/batch-print-pdf-options-in-dpo-1ib0thq/) in DPO.


![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/invoice-address_g42sd2.png =822xauto)


###### P.O. Book Limits
Define limits for usage within the project:

**Purchase Orders (POs)** → How many orders are authorized/ already used?
**Users** → How many users are allowed to be assigned to the project?
**File** **Attachments** → Define the storage quota for attachments (e.g., invoices, quotes)


| If needed, you can order additional **P.O.s** or **storage space** at any time. Simply click **“Add Storage”** or **“Purchase Orders”**, or reach out to us at **support@digitalpurchaseorder.com**.
 
If your **DPO Book license** is about to expire, please reach out to [support@digitalpurchaseorder.com]()


![](https://storage.crisp.chat/users/helpdesk/website/-/7/e/f/8/7ef8b3dbb012a000/po-book-limits_mazz92.png =813xauto)



**Any Questions?**
Our support team is happy to help:
Email: support@digitalpurchaseorder.com
Phone: +1 888 376 7254
[Or schedule a free demo](https://calendly.com/d/gpk-ppc-rjg) – we look forward to hearing from you.