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sourceDocument: Yokohama Finance and Supply Chain
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ft:publication_title :

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# Edit purchase requisitions with cost allocation adjustments

# Editing purchase requisitions and orders with cost allocation adjustments {#ariaid-title1}

* Release version: Yokohama
* 
* Updated March 25, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

As a shopper, you can modify purchase requisitions (PRs) and purchase orders (POs) while maintaining cost allocation across multiple cost centers.

## Example use case for editing a purchase with multiple cost centers {#edit-purchase-cost-allocation__section_qds_z5t_52c}

In this example, a shopper creates a PR with cost allocation distributed between two cost centers, Customer Success and
Engineering. The costs are assigned based on predefined percentages.

Suppose 20% is allocated to Customer Success and 80% to Engineering.

If you purchase 6 quantities of the energy monitoring device priced at $230 each. The total cost amounts to $1380.  
The cost for this purchase is allocated as follows:

* Customer Success Cost Center: $276 (20% of $1380)
* Engineering Cost Center: $1104 (80% of $1380)
{#edit-purchase-cost-allocation__ul_y1y_g5f_52c}

Now suppose you edit the PR or PO to increase the quantity from 6 to 10 pencils. The total cost amounts to $2300.  
In this case, the total cost is proportionally distributed between both the cost centers based on the original allocation:

* Customer Success Cost Center: $460 (20% of $2300)
* Engineering Cost Center: $1840 (80% of $2300)
{#edit-purchase-cost-allocation__ul_ajp_j5f_52c}

The cost allocation remains consistent when modifying purchase quantities in a PR or PO.

For more information, see [Cost allocations](https://servicenow-prod.fluidtopics.net/ItBh2YlupWx9xcRw732mzw "Cost allocation defines how to allocate the payment for a particular purchase line. Costs can be allocated towards a cost center, employee credit, or payroll payments.").
**Related tasks**   

* [Edit a purchase line from a purchase requisition or order](https://servicenow-prod.fluidtopics.net/9vcbuW4Jb_r6pt5UvHbxXw "You can edit and revise the quantity of a product or delivery location of a purchase line directly from a purchase requisition or order. You can also view the existing or current quantity or delivery date of the purchase requisition or order.")
* [Edit a purchase line from a purchase requisition or order from Employee Central (EC)](https://servicenow-prod.fluidtopics.net/n5Yn4TZenoYvZ45_JqXdlA "You can edit and revise the quantity of a product or delivery location of a purchase line from Employee Center. You can also view the existing or current quantity or delivery date of the purchase requisition or order.")