Build a credit invoice and annexure at Billing → Create Credit Bills.
Billing → Create Credit Bills (/billing/credit) bills a credit customer for a period. Edit uses ?invoiceId=.
Who can open it: users granted Create Credit Bills.
Choose the credit customer, billing company, bank, and date range. Invoice number fills from customization once orders exist in that period.
The form lists that customer’s unbilled (or period) orders. Amounts stay locked until those orders exist.
GST type (if the company bills GST). Include Annexure uses the annexure template. If that template has a RECEIVER column, a nested Show Receiver switch appears (on by default with annexure).
Preview the invoice. Save / generate, then email or print. On edit, client, period, number, and payments stay locked.