How to Amend a Purchase Order
- Bogdan Büchner
- Jan 1, 2026
- 2 min read
Purchase Orders sometimes need to be updated after they have already been created. However, changes to an existing Purchase Order should not be made without the prior consent of the relevant approvers. DPO therefore handles changes through an amendment process. Every amendment requires a new approval, while the original Purchase Order ID remains unchanged.
Check your amendment permission
Before amending a Purchase Order, make sure you have the necessary permission.
Open any Purchase Order and look for the pencil icon in the upper-right corner.
If the icon is not visible, your DPO book administrator will need to grant you the appropriate permission. Administrators can activate it by going to Settings, opening the Users tab, editing the relevant user profile and enabling the Can Amend checkbox.
Amend an existing Purchase Order
Once the permission has been enabled, open the Purchase Order you want to change and click the pencil icon in the upper-right corner.
Confirm that you want to amend the Purchase Order. DPO will then take you back to the Purchase Order editor.
From there, you can make changes such as:
Adding new items
Editing existing items
Updating supplier information
Changing the department
Updating component information
Once the amended Purchase Order has been finalized, it will need to go through the approval process again.
Keep the original Purchase Order ID
Amending a Purchase Order does not create a completely new Purchase Order ID.
DPO keeps the original Purchase Order ID and adds a revision number to identify the amended version. This makes it easier to keep revisions connected to the original Purchase Order while still clearly distinguishing between different versions.
Keep track of multiple revisions
A Purchase Order may sometimes need to be amended more than once.
To review its full history, click the PDF button on the revised Purchase Order.
DPO automatically creates a single document containing the latest revision together with all previous versions. This gives you the complete Purchase Order history in one file.
Maintain control over Purchase Order changes
The amendment process ensures that changes to existing Purchase Orders remain subject to approval.
At the same time, DPO keeps the original Purchase Order ID, adds revision numbers and provides a complete history of all previous versions in one PDF.
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