The Scenario
It is the last business day of the month. You run a freelance design agency with 50 active retainer clients. Each month you bill the same amounts, same descriptions, same account codes — just a new due date. You have a Google Sheet with every client's contact ID, service description, unit amount, and account code in columns A through D. In Xero, these invoices do not exist yet.
The bad version:
- You open Xero's invoice screen and start creating them manually — contact, line item, amount, account code, due date — one at a time, for 50 clients
- Around invoice 20, you realize you typed the wrong account code on invoice 12, so you go back, find it, edit it, and lose your place in the sequence
- You finish at 7 PM, invoice 34 has the wrong contact because you copied the row above by mistake, and you don't catch it until the client emails back
Fifty invoices is not a large number. It is, however, exactly large enough that doing it by hand produces errors, and exactly large enough that fixing those errors takes longer than the original task should have.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads the data in your billing tab and talks directly to Xero — so you can describe the invoice structure once and it creates every invoice in the batch.
Open your billing sheet and try this prompt:
Create a Xero invoice for each row in the Billing tab starting at row 2 — column A is contact ID, column B is line item description, column C is unit amount, column D is account code — set due date to 30 days from today and status to AUTHORISED for each invoice
What You Get
- One Xero invoice created per row, with the contact, line item, amount, and account code from your sheet
- Due dates calculated from today's date and set on each invoice
- Any row where the contact ID does not match a Xero record surfaces as a note in a Status column — so you know which ones need attention without hunting through Xero
- Invoices with errors are not silently skipped — each failure comes back with a reason
What If the Data Is Not Quite Ready
The sheet uses contact names, not contact IDs — Xero requires IDs
For rows 2 through 51 in the Billing tab, look up each contact name in column A against Xero contacts, resolve it to the contact ID, then create a Xero ACCREC invoice using the resolved contact ID, description from column B, amount from column C, and account code from column D
Some rows have multiple line items per invoice — one client, multiple service lines
Create Xero invoices grouped by the client name in column A — combine all rows with the same client into a single invoice with one line item per row, using description from column B, amount from column C, and account code from column D for each line
You want the invoices in DRAFT status first so you can review before authorising
Create Xero invoices for rows 2 through 51 in the Billing tab using contact ID from column A, description from column B, amount from column C, account code from column D — set each invoice to DRAFT status so I can review before sending
Review the sheet, flag any missing values, then create all complete rows as invoices
Check the Billing tab for any rows where column A, B, C, or D is blank — write "Missing data" in column E for those rows — then for all rows where columns A through D are complete, create a Xero ACCREC invoice and write the resulting Xero invoice number into column E
One prompt handles the validation, the flagging, and the creation — you get a clean sheet and a batch of Xero invoices at the end.
Try It
Get the 7-day free trial of SheetXAI and open your retainer billing sheet with Xero connected, then ask it to create this month's invoices. You might also want to read how to export outstanding invoices for AR aging or export Xero contacts for CRM import.