Hi,

The error message says that the field named "purchase_line_warn" is not getting the value and it is a required field, so it is mandatory to supply the value for that field.
Checking your data file, it seems you have given 1 for the field purchase_line_warn . The value that can be accepted by this field are 'no-message' ,  'warning' or 'block'



Sample,

<odoo>
   <data noupdate="1">
      <record model="product.product" id="hotels_be_bago.product1">
         <field name="name">Valencia Product</field>
         <field name="type">service</field>
         <field name="purchase_line_warn">warning</field>
         <field name="sale_line_warn">no-message</field>
      </record>
      
   </data>
</odoo>

So update the code accordingly and try. Once everything is okay, give noupdate="1" for the data file.

Thanks

Hello,

this error message appear if you have already installed your module !

If you uninstalled and installed your module you will not have an error!

I solved it adding to the _manifest__.py on the "depends" key the purchase module, seems like odoo creates like an "environment" when updating a module and that environment only has whatever the depends key value in the manifest  indicates, so if you have installed the purchase module and then you reinstall a module that creates a new product and you dont have added in the key depends the purchase module, it will not detect all the fields that purchase have added, in this specific case purchase_line_warn, and since the field has a not null constraint the database will raise an exception.

I dont know why odoo developed like this, but not seems to be good. Hope this helps someone who affronts this problem too.

I'm having the same probem, didn't even have the warning config activated, but seems is a base field, but:

<field name="purchase_line_warn">no-message</field>

doesn't work at all.

Also the field is declared with a default 'no-message' value :

    purchase_line_warn = fields.Selection(WARNING_MESSAGE, 'Purchase Order Line', help=WARNING_HELP, required=True, default="no-message")

Shouldn't take the default value if the field is missed?

He is right (guy whit kung-fu panda image. Odoo forum is so pathetic that I cannot comment his post or address him in mine)! I had the same issue. If you want to keep updating your module, you have to add noupdate='1' in data tag, but remember that after this everything in this data tag will not be updated while module update.

It tells me the same...

odoo.tools.convert.ParseError: "null value in column "purchase_line_warn" violates not-null constraint

DETAIL:  Failing row contains (96, Valencia Product, 1, null, null, null, service, f, 1, 1.00, null, null, t, t, 1, 1, 1, t, null, null, null, null, 1, 2019-01-17 11:10:42.859666, 1, 2019-01-17 11:10:42.859666, manual, no-message, null, no, order, 1, 0, none, null, null, null, null, null, null, null, null, null).

" while parsing /var/lib/odoo/modules/hotels_be_bago/demo/demoProducto.xml:4, near

<record model="product.product" id="hotels_be_bago.product1">

<field name="name">Valencia Product</field>

<field name="type">service</field>

<field name="purchase_line_warn">warning</field>

<field name="sale_line_warn">no-message</field>

</record>