How to stop ordering process if no common carrier exist?

[Zhivko]

Hi,

 

I can't find a way how to stop ordering process if multiple products are selected and there is no common carrier for them.

I have the following configuration:

PrestaShop 1.5.3.1

Product1 can be shipped by Carrier1

Product2 can be shipped by Carrier2

 

If a customer selects Product1 and Product2 in the same cart PS creates two orders for the same cart. I want to disallow this process and to show and error on the shipping page.

 

Is it possible to be configured or I have to do a code modification?

Edited May 24, 2013 by Zhivko (see edit history)

[bellini13]

In the Preferences | Orders section, there is a setting "Allow Multishipping". Have you tried to disable that setting?