Managing Invoice2go Numbers, Credits and Business Documents

By Thomas Walker, billing-records systems analyst with 9 years of experience supporting small-business invoice controls

Last reviewed: July 12, 2026

Invoice2go is a mobile and web billing platform for creating invoices, estimates, purchase orders and credit memos, then organizing those documents by customer, date, number and tax year. This independent guide is not affiliated with Invoice2go or BILL.

Existing users should access their account through Invoice2go’s verified login page. Businesses with growing document histories should configure numbering and correction procedures early, because deleting a document, losing synchronization or changing a sequence can leave gaps that later confuse customers and accounting records.

What Invoice2go manages beyond invoices

Invoice2go is primarily known for estimates and customer invoices, but its official document area also includes purchase orders, credit memos, document search, and sorting tools. Its creation workflow is broadly similar across those document types, although each serves a different business purpose.

An invoice requests payment from a customer. An estimate presents proposed work. A purchase order records an intended purchase or order. A credit memo reduces an amount connected with returned, undelivered or otherwise credited items.

Keep those roles separate.

Changing an invoice total after a customer has already received it may hide what actually happened. In some cases, retaining the original invoice and issuing a credit memo creates a clearer record than silently editing or deleting the first document.

The correct accounting and tax treatment varies by jurisdiction. Invoice2go supplies the document controls; it does not determine whether a credit, cancellation or correction satisfies local recordkeeping rules.

Start at the verified Invoice2go login

The verified Invoice2go account screen contains Email, Password, Forgot password?, and a registration link. The login is hosted on the Invoice2go account domain rather than a third-party software directory.

Use the original account first.

A second registration can create a separate profile with no access to the earlier customers, document numbers or transaction history. Someone who sees an empty account should confirm the email and original sign-in method before recreating invoices.

Account actions should remain inside Invoice2go’s verified pages and Help Center. Do not provide passwords, payment details or authentication codes to a website offering unofficial login assistance.

My first priority would be recovering the existing document history. Skip generating replacement invoices until the correct account has been identified.

Set a numbering sequence before issuing documents

Invoice2go allows separate numbering controls for invoices, estimates, purchase orders and credit memos. Users can add a prefix or reset a document sequence from a chosen number. Changes affect future documents rather than rewriting numbers already assigned.

On the web, the documented path is the company menu, Account & settings, Customize invoice options, and Numbering. The user then selects the document type, enters a prefix or starting number, and saves the design.

A useful sequence should be understandable outside the application.

For example, a business might use different prefixes for invoices and credit memos so exported files and customer correspondence remain easy to identify. The exact convention matters less than applying it consistently.

Do not reset numbers casually. A new sequence can overlap with older documents when the starting point or prefix is reused, which may make reconciliation and customer inquiries harder.

Why gaps appear in invoice numbers

Invoice2go says numbering gaps can occur when a document does not fully synchronize because of a poor internet connection or when a document is manually deleted. Its numbering controls allow users to create future documents out of the usual sequence when a missing number needs to be addressed.

A gap does not automatically prove that an invoice was sent or paid.

Check whether the missing number belonged to an unfinished draft, an offline document, or a deleted record. Invoice2go’s offline-document guidance explains that a document may remain only on one mobile device when it has not synchronized with the cloud account.

Do not fill the gap immediately.

First search the account, inspect the original device and check exported records. Creating a new invoice with the missing number while an offline copy still exists can leave two documents carrying related or duplicate references.

Short pause. Better records.

Recover an offline document carefully

Invoice2go states that its service is cloud-based and requires a sufficiently strong connection to synchronize mobile documents. Its workaround for a persistent offline invoice is to open the document, select Copy, choose Invoice as the document type, save the new copy, and then delete the original offline version after confirming that the replacement saved correctly.

That order matters.

Do not remove the local version before verifying that the saved copy appears in the account. Check the client, amount, date, line items and document number, then confirm that the server version can be opened from the web application or another authorized device.

Copying an invoice may affect its assigned number. Review the sequence afterward rather than assuming the replacement retained every reference exactly as intended.

My second priority would be preserving the business record before tidying the numbering. Skip deletion until synchronization has been confirmed.

Create purchase orders as separate records

Invoice2go supports purchase-order creation through both mobile and web applications. The documented fields include the client, item name, description, rate, quantity, optional tax or discount information, expenses, photos and comments. The finished document can be previewed, saved and sent.

A purchase order should not be confused with a customer invoice.

It may document an intended acquisition or authorization, while an invoice records an amount being billed. Businesses should determine who the document is addressed to and why it is being issued before selecting the type.

On mobile, purchase orders are found through More, Purchase orders, and the plus icon. On the web, users can select Create and then Purchase order.

Use a recognizable description and reference. “Materials” is weak; a named product, quantity and project reference will be easier to match with a later supplier bill or customer job.

Use a credit memo for a documented reduction

Invoice2go allows credit memos to be created and sent from a browser or mobile application. Its support documentation describes them as a way to give a customer credit for items that were returned or not received.

Credit memos can also be included on client statements. Invoice2go says the credit amount is deducted from the combined invoice total shown on the statement. Enabling Only show unpaid invoices removes the credit memos from that statement view.

This can create a presentation issue.

A customer may need to see both the original charge and the credit that reduced it. Hiding the credit memo while displaying a lower balance can make the statement harder to follow unless the individual invoice already reflects the adjustment clearly.

Review the customer-facing statement before sending it. Confirm that the original invoice, credit and remaining balance tell the same story.

A credit memo is not necessarily a cash refund. It records a credit adjustment; the financial action required depends on whether the invoice was unpaid, partially paid or already settled.

Search before recreating a missing record

Invoice2go’s global search matches words and numbers across documents, clients, saved items and projects. Search results initially emphasize the part of the application the user is currently viewing, while still allowing results from other record types.

Use several identifiers.

Search by invoice number, customer name, project name, distinctive item description and amount where possible. A document may exist under an unexpected client spelling or in another tax year.

Searching from the invoice area can narrow the initial results toward invoices. A global search from the home screen provides broader coverage across the account.

Do this before making a duplicate. Two invoices for the same job can trigger duplicate payment requests, incorrect reminders or conflicting accounting exports.

Sort documents by the field that answers the question

Invoice2go supports sorting invoices, estimates, purchase orders and credit memos by document date, document number and client name. Invoices can also be sorted by due date, while the web application provides project-name sorting for invoices and estimates.

Document lists are filtered automatically to the current financial tax year. Users can change that filter to all years or select a specific tax year.

This default can make an older document appear missing.

A user searching for a December invoice after the financial-year filter changes may see no result until the relevant year or All tax years is selected. Check the active year before concluding that a record was removed.

For overdue work, sort invoices by due date. For sequence review, sort by document number. For a customer dispute, sort by client and then inspect the connected documents.

One filter rarely answers every question.

Watch for Xero transfer errors

Invoice2go’s Xero documentation lists several specific errors that can interrupt document copying. Tax and currency settings must match between the two systems, and invoices already authorized in Xero cannot be modified through the same Invoice2go transfer process.

Other documented errors include an invalid client email format, an invoice with no line items, a currency unavailable in the Xero organization, an incompatible tax type, or an archived contact.

Fix the underlying record first.

Changing the invoice number will not resolve a missing line item or tax-code mismatch. Likewise, repeatedly exporting the same document may create confusion when an earlier version already exists inside Xero.

Invoice2go notes that edits made to an authorized invoice directly in Xero do not synchronize back to Invoice2go, which can leave differences between the two systems.

Choose one correction process and document it. Skip editing both platforms independently without checking which system will hold the final record.

Frequently asked questions

Can I change an Invoice2go invoice number?

You can change the prefix or future numbering sequence. Existing document numbers are not automatically rewritten.

Why is there a gap in my invoice numbers?

Invoice2go says gaps can result from deleted documents or records that failed to synchronize because of a poor connection. Search the account and original device before filling the missing number.

Can Invoice2go create purchase orders?

Yes. Purchase orders can be created, previewed and sent through the mobile or web application.

What is an Invoice2go credit memo?

It is a document used to give a client credit, including for returned items or items not received. It can also reduce the total shown on a client statement.

Can I search by invoice number?

Yes. Global search matches words and numbers across documents and other account records.

Why can’t I find last year’s invoice?

The document list may be filtered to the current financial tax year. Select the relevant year or All tax years, then search again.

Why will my invoice not copy to Xero?

Possible documented causes include mismatched taxes or currencies, an invalid email format, missing line items, an archived contact, or a document already authorized in Xero.

Does a credit memo return money automatically?

Not necessarily. It records a credit adjustment; any separate refund depends on the payment status and applicable payment process.

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