How Should E-Invoicing Connect to the Sales Cycle?

The invoice flow begins before submission. Customer, item, unit, tax, and price data must be controlled in the operating system because missing definitions later become rejections or manual repair.

Define the approval point. When is a sales or delivery document ready to become an invoice, and who may cancel or amend it? This prevents transmission before commercial and financial review is complete.

Expose document states: ready, sending, accepted, rejected, or action required. Preserve submission identifiers, error messages, and attempt history so the team can address causes rather than retry blindly.

A sound project tests varied real data, including discounts, returns, and new customers, and describes the integration scope and approved technical requirements without unsupported certification claims.