If the digits of the field is 0, than using '0.0' trigger the validation error
introduced by 2be02f249a1d.
Closes#13197
(grafted from 979cd092ea24f04328af5f4ff315c418e1c5b3e6)
--HG--
branch : 7.0
When the order line as a supplier/customer product, we should allow to select
blanket agreement line with the same product or without any product. Because
the supplier/customer product may be added after the blanket agreement is
running.
Closes#12909
(grafted from c397ef500313f85fc7f3552786e98237d4036441)
--HG--
branch : 7.0
Cédric Krier