Common Xero error messages include:

An invoice fails because the connection to Xero has expired or your organisation is on Cashbook and Ledger plan.

If your Xero account gets disconnected in Xero or in Splose, you will need to go back to settings. If your organisation is on Cashbook and Ledger plan, please upgrade your plan or contact your accountant or bookkeeper.

This means your accounts (in your organisation’s chart of accounts) or system accounts (set by Xero) are locked in Xero.

Accounts are typically set up by your accountant, so it's worth double-checking with them. Otherwise, you can remove the lock dates. Then click Retry on failed invoices.

The lock date is set before the end of year lock date and Xero will not allow you to add or edit any invoices in Xero earlier than the lock date.

Change or remove the lock date in Xero and then retry syncing your invoices in Splose, or change the invoice date in Splose. Read more on the Xero help site.

This error occurs when an invoice has already been paid or partially paid in Xero, and you then edit the invoice in Splose.

Update the invoice in Xero or delete the invoices in Splose and Xero and record the payment correctly during the first attempt.

This error occurs when you try to create an invoice where an invoice with the same number already exists in Xero.

Edit the invoice in Xero and change the invoice Reference number and Invoice number to something random and unique, for example, if the invoice is INV-0002, change both the Reference number and Invoice number in Xero to INV-XXX2. Then, delete this invoice in Xero. Go back to Splose, and Retry syncing. This will successfully create the new invoice in Xero.

The invoice in Xero may be voided or deleted. To check, go to Business, then Invoices and click the search button.

Select the include deleted & voided checkbox and click search.

You will see any voided and deleted invoices here.