Hi Damien,

In the past, I've seen this error when the SOAP XML was malformed. Could 
you post your request XML with sensitive information removed (such as your 
developer token) so I can check it?

Thanks,
Josh, AdWords API Team

On Thursday, July 16, 2015 at 8:56:54 AM UTC-4, Damien wrote:
>
> Hi,
>
> I am currently working on creating Remarketing lists. I am using the 
> Google AdWords API's Python libraries.
>
> I needed to create a LogicalUserList combining two ExpressionRuleUserList. 
> This is the error I got:
> suds.WebFault: Server raised fault: 'Cannot construct an instance of 
> com.google.ads.api.services.datax.userlists.LogicalUserListOperand because 
> it is abstract.  You are probably missing an @Uses annotation while 
> invoking public abstract 
> com.google.ads.api.services.datax.userlists.UserListReturnValue 
> com.google.ads.api.services.datax.adwordsuserlist.AdwordsUserListService.mutate(java.util.List)
>  
> throws com.google.ads.api.services.common.error.ApiException with params 
> [[com.google.ads.api.services.datax.adwordsuserlist.v201502.jaxbgen.UserListOperation@16687106]].'
>
> My source code:
> #!/usr/bin/python
> #coding=UTF-8
>
> from datetime import date
> from datetime import datetime
> from datetime import timedelta
> from googleads import adwords
>
> (...)
>
> def createNewList(client, list_a, list_b):
>   # Initialize appropriate service.
>   adwords_user_list_service = client.GetService(
>       'AdwordsUserListService', version='v201502')
>
>
>   rules = [
>       {
>           'ruleOperands': [list_a],
>           'operator': 'ALL'
>       },
>       {
>           'ruleOperands': [list_b],
>           'operator': 'NONE'
>       }
>   ]
>
>
>   # Create the user list with no restrictions on site visit date.
>   combination_user_list = {
>       'xsi_type': 'LogicalUserList',
>       'name': 'Bouncers list created at %s'
>               % datetime.today().strftime('%Y%m%d %H:%M:%S'),
>       'description': 'Users who visited list A but not B',
>       'rules': rules
>       #'startDate': today.strftime('%Y%m%d'),
>       #'endDate': end_date.strftime('%Y%m%d')
>   }
>
>
>   # Create operations to add the user lists.
>   operations = [
>       {
>           'operand': user_list,
>           'operator': 'ADD',
>       } for user_list in [combination_user_list]
>   ]
>
>
>   # Submit the operations.
>   user_lists = adwords_user_list_service.mutate(operations)
>
>
>   # Display results.
>   for user_list in user_lists['value']:
>     print (('User list added with ID %d, name "%s", status "%s", list 
> type'
>             ' "%s", accountUserListStatus "%s", description "%s".') %
>            (user_list['id'], user_list['name'],
>             user_list['status'], user_list['listType'],
>             user_list['accountUserListStatus'], user_list['description']))
>
>
>
> adwords_client = adwords.AdWordsClient.LoadFromStorage()
>
> createNewList(adwords_client, list_a, list_b)
>
> With list_a and list_b being lists I previously created.
>
> Can anybody tell me what's wrong?
>
> Alternatively, how is it possible to reproduce the "Visitors of a page 
> who did not visit another page" behaviour with the API? The only way 
> seemed to used combination lists but even is failing (see the error 
> above)...
>
>
> Thanks for your help,
>
> Damien
>

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