Customer Invoice Merge

ustomer Invoice Merge is a Dolibarr module designed to make draft customer invoice management easier. From the customer invoice list, users can select two or more PROV draft invoices for the same customer and launch a mass action to create one new draft invoice.

This module does not perform a simple PDF merge. It creates a real customer invoice in Dolibarr and copies the invoice lines from the selected source invoices into the new invoice. The created invoice remains in draft status, so it can be reviewed, edited, completed, validated or sent using the standard Dolibarr invoicing workflow.

Before creating the new invoice, Customer Invoice Merge checks that all selected invoices are PROV invoices, that they are all in draft status, that they belong to the same customer and that at least two invoices have been selected. If one condition is not met, the operation is stopped to preserve billing data consistency.

This Dolibarr module is especially useful for companies that create several provisional invoices for the same customer and need to consolidate them into a single draft invoice before validation. It follows Dolibarr user permissions, mass actions and native customer invoice behavior.