How to update "Item Description" in Blanket Purchase Agreement's LINES via REST API

Summary:

I want to know how to update "Item Desctiption" in BPA's LINE via REST API

Content (please ensure you mask any confidential information):

Hi, experts. I need your help.

As the title, I want to update "Item Desctiption" in BPA via REST API.

I know there is a manual, and It says..

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Update Blanket Purchase Agreements

You can use the Purchase Agreement Import Requests REST resource to update blanket and contract purchase agreements.

For example, you can use this REST API to update:

• The start date or end date on purchase agreements
• The price or supplier part number on a blanket purchase agreement line