Not Enough Virtual Stock:
#. Go to *Sales > Products > Products*.
#. Create new storable product without stock available.
#. Go to *Sales > Orders > Quotations*
#. Create new quotation.
#. Add product without stock available.
#. An exception will be displayed.

No ZIP code on destination:
#. Go to *Contacts*.
#. Edit or create new contact.
#. Set empty zip code.
#. Go to *Sales > Orders > Quotations*
#. Create new quotation.
#. Set delivery address with no zip code.
#. An exception will be displayed.

Product warning:
#. Go to *Sales > Products > Products*.
#. Edit or create new product.
#. Go to *Sales* tab.
#. Set your desired warning option under the *Warning when Selling this Product* group.
#. Set some warning message.
#. Go to *Sales > Orders > Quotations*
#. Create new quotation.
#. Add product with warning message.
#. An exception will be displayed.

Partner warning:
#. Go to *Contacts*.
#. Edit or create new contact.
#. Go to *Internal notes* tab.
#. Set warning option according to *Warning on the Sales Order* group.
#. Set some warning message.
#. Go to *Sales > Orders > Quotations*
#. Create new quotation.
#. Set partner with warning message.
#. An exception will be displayed.