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!

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>

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?

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.