You can set or update the purchase order number used for your monthly invoice account.
To set or update your purchase order number:
- Sign in to the Google Cloud Platform Console.
- Open the console navigation menu ( ) and select Billing.
- If you have more than one billing account, select Go to linked billing account to manage the current project's billing. To locate a different billing account, select Manage billing accounts.
- From the Billing navigation menu, click Documents.
- At the top of the Documents page, click SET PURCHASE ORDER NUMBER.
- Enter the new purchase order number.
- Click OK.
After setting the new purchase order number, you can regenerate past invoices by selecting Regenerate invoice with updated information for selected invoices.