Error Sales Order (This Entry already exists in the following tables)

Hi,

The following error is appearing when we try to create a sales order, for every single user on the system:

This Entry already exists in the following tables (ODBC-2035) [Message 131-183]

We already deleted every single alert message on the inbox, but the error is still showing up.

SAP Business One 8.82 PL: 10

Any Ideas?

Thanks in advance.

Regards.