Hello,

you need to pass parameters as a list.

Try this :

models.execute_kw(
    db, uid, password, 'stock.picking', 'do_new_transfer', [pick_id],{})

Calling methods

The second endpoint is xmlrpc/2/object, is used to call methods of odoo models via the execute_kw RPC function.

Each call to execute_kw takes the following parameters:

• the database to use, a string
• the user id (retrieved through authenticate), an integer
• the user's password, a string
• the model name, a string
• the method name, a string
• an array/list of parameters passed by position
• a mapping/dict of parameters to pass by keyword (optional)

example :

models.execute_kw(db, uid, password,
    'res.partner', 'check_access_rights',
    ['read'], {'raise_exception': False})