Purchase Order (PO)
Definition
A formal document sent to a vendor authorizing a purchase. Specifies items, quantities, agreed prices, and delivery terms. HelloBooks supports 3-way matching: PO to GRN to vendor invoice.
Related Terms in Invoicing & Sales
Recurring Invoice
An invoice automatically generated and sent on a schedule — weekly, monthly, quarterly. Ideal for subscription services, retainers, and maintenance contracts. HelloBooks automates creation, delivery, and payment tracking.
Sales Order
A confirmation document sent to a customer after they accept a quote, before delivery and invoicing. HelloBooks converts quotes to sales orders to invoices in a seamless workflow.
Aging Report
A report that groups unpaid invoices (accounts receivable) or bills (accounts payable) by how long they have been outstanding — typically 0–30, 31–60, 61–90, and 90+ day buckets. It highlights overdue balances and collection risk. HelloBooks generates AR and AP aging reports in real time with automated payment reminders.
Dunning
The structured sequence of reminders sent to a customer with an overdue balance, escalating in tone and channel over time. Automating dunning is one of the most reliable ways to reduce days sales outstanding.
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