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completed, a notification mail will be sent to you, and a chatter post will be created under the given BillingRun too.”
Email Notification for Phase 3
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If one or many items have failed you can manually re-send or create the PDF. To automate the Emails being sent 7.6.4 Setup automated Invoices Emails.
For a better overview of a billing run, we strongly advice to use advise using the Billing run component.