Summary
Short Answer
The error message "Already exists: Account + Your Reference" or "Duplicate Invoice" originates from Exact Online.
Check the invoice number and account in Exact Online.
When should you use this?
Context
Use this information when one of the following error messages is displayed while processing an invoice in Basecone:
Already exists: Account + Your Reference
Duplicate Invoice
These error messages originate from Exact Online. This can be caused by an invoice being booked
Step-by-Step Instructions
Procedure
Open Exact Online.
Check the invoice number.
Check the account linked to the invoice.
Verify whether the invoice number already exists in Exact Online.
The invoice number may already be known in Exact Online.
It is possible that the invoice was processed previously without using Basecone.
Verify the information based on the data found in Exact Online.