Line 10000 of the shipment which you are attempting to invoice...

Hi all!
Have you ever seen an error message like this?

We're creating invoices, using "Get Shipment Lines" function. By the moment we don't post any document but, we create them so fast that we don't realize we have created the same invoice twice.
The first invoice can be posted without problem but if you try to post the second one the system returns the error:

"Line 10000 of the shipment XXXXX, which you are attempting to invoice, has already been invoiced"

You'll have to use the document to post a different one.

Hope be useful!
See you soon!