Hi,

In the XML just define the field once with the base language, usually English, as an example:

<record id="action_reserve_picking" model="ir.actions.server">

    <field name="name">Reserve picking lines</field>

    <field name="model_id" ref="model_stock_picking"/>

     ……

</record>

Then translate it in a .po file for Swedish (or other languages):

File path: your_module/i18n/sv.po

#. module: your_module

#: model:ir.actions.server,name:your_module.action_reserve_picking

msgid "Reserve picking lines"

msgstr "Reservera plocklinjer"

Replace your module name with your_module.

Hope it helps.