
Hello community,
When I'm posting an invoice in the 'Free text invoice' module, I wanted the values entered in the unit price column to be just accepted positive values.
I wonder if it is possible to block the system from posting the invoices with this issue, and where I can configure this.
Can you help me?
This isn't in standard design and must not be, Because in case of credit note, it has to be in minus.
If you require, customize this.