This issue is usually due to a missing Analysis code. Please take a look at the main transaction window (where you can see the header details and detail lines all at once) and make a note of the "Analysis" used on the detail line(s) at the bottom.
You will then need to check in Financials under Debtors, Settings, Analysis and make sure that this code exists. If it does not, you will need to create it. Help on this can be found in our article Access Financials: How can I create an Analysis code?
If the Analysis code does exist, or you believe that the wrong Analysis code is being used, there could be an issue in with the method of obtaining the Sales Analysis code. To check this configuration, Support will need to do some investigation on the database.
Please raise a new case online and reference the title of this article and include details of the Sales Invoice.
Error - 'Analysis currency does not match selected Customer Currency' when saving or submitting Sales Invoice
Updated over 2 weeks ago