---
title: "Cancel the remaining quantity - Impact workspace"
slug: "cancel-the-remaining-quantity-impact-workspace"
description: "Cancel unregistered purchase order quantities with our step-by-step guide. Learn how to manage ECOs and streamline your order process effectively."
tags: ["Task", "ECM plus"]
status: "update"
updated: 2026-10-21T07:48:06Z
published: 2026-10-21T07:48:06Z
canonical: "docs.staedean.com/cancel-the-remaining-quantity-impact-workspace"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.staedean.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cancel the remaining quantity - Impact workspace

This action cancels only the quantity that hasn't been registered, received, or invoiced. It doesn't reverse completed purchase transactions.

## Steps

1. Go to **Product information management > Engineering change management > Engineering change orders**.
2. Open a released ECO you want to review.
3. On the Action Pane, in the **Business impact** group, select **Open impact workspace**.

The workspace opens for the selected ECO.

> [!NOTE]
> Note
> 
> If the ECO has no lines yet, the button is unavailable. Add at least one affected product first.
4. In the **Purchase orders** section, locate the affected purchase order line.
5. Select **Cancel line**.

The **Cancel line** pane opens on the right.
6. Review the purchase order, line number, vendor account, item number, quantity, and requested receipt date.
7. In the **Cancel reason** field, select a reason, if required.
8. Enter additional information in the **Notes** field, if needed.
9. Select **Confirm** to cancel the remaining quantity.

To close the pane without canceling the quantity, select **Cancel**.

After the cancellation is complete:

- The remaining open quantity is canceled.
- The **Action status** changes to **Canceled**.
- An entry is added to the **Change log**. For more information, see [Track actions in the change log](/manufacturing/docs/track-actions-in-the-change-log-impact-workspace).

If the line was partially received, its standard purchase order status might change to **Received** after the remaining quantity is canceled. The **Canceled** value in the workspace represents the corrective action, not necessarily the standard line status.

**Example**

Purchase order **000511**, line **1**, has an open quantity of **10.00 pcs** for item **SIMPLEA1**. The remaining quantity is no longer required because a separate order will be created for the updated item.

Select **Cancel line** to cancel the open quantity on the original line.

> [!NOTE]
> Note
> 
> If purchase order change management is enabled, the cancellation might require workflow submission and approval before it takes effect.

## Related

- [Manage purchase orders - Impact workspace](/manage-purchase-orders-impact-workspace.md)
- [Get to know impact workspace](/get-to-know-eco-impact-workspace.md)