[AMT] Creating white list of workers on Mechanical Turk

Hello, I am trying to create qualification to allow only users from specific white list to access the HIT. However, it works only for 1 user ID but does not work for array of users. I am using Python and boto3 API to deploy HITs. Also I am providing my tests in sandbox. My code:

TaskAttributes = {
        'MaxAssignments': 1,
        'LifetimeInSeconds': 7 * 24 * 60 * 60,
        'AssignmentDurationInSeconds': 60 * 15,
        'Reward': '0.75',
        'Title': 'my title',
        'Keywords': 'some keywords',
        'Description': 'some description.',
        'QualificationRequirements': [{
            'QualificationTypeId': whitelist_qualification_id,
            'Comparator': 'EqualTo',
            'IntegerValues': [1],
            'RequiredToPreview': True,
        }, {
            'QualificationTypeId': blacklist_qualification_id,
            'Comparator': 'DoesNotExist',
            'RequiredToPreview': True,
        }],
    }
...

def manage_qualification_lists(client, whitelist_file, blacklist_file):
   # Read workers from the whitelist
    with open(whitelist_file, 'r') as f:
        reader = csv.reader(f)
        whitelist = [worker_id.strip() for sublist in reader for worker_id in sublist]
    # Read workers from the blacklist
    with open(blacklist_file, 'r') as f:
        reader = csv.reader(f)
        blacklist = [worker_id.strip() for sublist in reader for worker_id in sublist]

    # Create a unique name for the whitelist qualification
    whitelist_qualification_name = 'WhitelistQualification_{}'.format(int(time.time()))
    # Create the whitelist qualification
    response = client.create_qualification_type(Name=whitelist_qualification_name,
                                                Description='This is a qualification for whitelisted workers',
                                                QualificationTypeStatus='Active',
                                                AutoGranted=False)
    whitelist_qualification_id = response['QualificationType']['QualificationTypeId']

    # Assign the whitelist qualification to each worker in the whitelist
    for worker_id in whitelist:
        print("White list: ", whitelist)
        print(f"Worker ID type: {type(worker_id)}, Value: {worker_id}")
        client.associate_qualification_with_worker(QualificationTypeId=whitelist_qualification_id,
                                                   WorkerId=worker_id,
                                                   IntegerValue=1,
                                                   SendNotification=False)

    # Create a unique name for the blacklist qualification
    blacklist_qualification_name = 'BlacklistQualification_{}'.format(int(time.time()))
    # Create the blacklist qualification
    response = client.create_qualification_type(Name=blacklist_qualification_name,
                                                Description='This is a qualification for blacklisted workers',
                                                QualificationTypeStatus='Active',
                                                AutoGranted=False)
    blacklist_qualification_id = response['QualificationType']['QualificationTypeId']

    # Assign the blacklist qualification to each worker in the blacklist
    for worker_id in blacklist:
        client.associate_qualification_with_worker(QualificationTypeId=blacklist_qualification_id,
                                                   WorkerId=worker_id,
                                                   IntegerValue=1,
                                                   SendNotification=False)

    return whitelist_qualification_id, blacklist_qualification_id

whitelist_file is a csv containing list of worker IDs

This code returns following traceback: Launching HITs, existing logfile will be overwritten White list: ['A21GE3SZCDZ8ZE', 'A1B8BFBK7T6YWJ', 'AFRKVRPZ2RHY8', 'A9MGD6PRW1N7K', 'AZU9D7YLCTAYV', 'A1Y35C8EJW168W', 'ARZ49D9ZQE6NM', 'A1PVUDM918PGMT', 'A2DLLQ60Y35X2U', 'A28PKKMBXHJCN3', 'AKQAI78JTXXC9', 'A3NFGEUZAH9V5G', 'A1OYUKUH3SWNOG', 'A1B5DQL8UVSLBW', 'A3NFGEUZAH9V5G', 'A329OLXWLB6WT9', 'A1N8TKTLXV92QR', 'A28PKKMBXHJCN3'] Worker ID type: <class 'str'>, Value: A21GE3SZCDZ8ZE White list: ['A21GE3SZCDZ8ZE', 'A1B8BFBK7T6YWJ', 'AFRKVRPZ2RHY8', 'A9MGD6PRW1N7K', 'AZU9D7YLCTAYV', 'A1Y35C8EJW168W', 'ARZ49D9ZQE6NM', 'A1PVUDM918PGMT', 'A2DLLQ60Y35X2U', 'A28PKKMBXHJCN3', 'AKQAI78JTXXC9', 'A3NFGEUZAH9V5G', 'A1OYUKUH3SWNOG', 'A1B5DQL8UVSLBW', 'A3NFGEUZAH9V5G', 'A329OLXWLB6WT9', 'A1N8TKTLXV92QR', 'A28PKKMBXHJCN3'] Worker ID type: <class 'str'>, Value: A1B8BFBK7T6YWJ Traceback (most recent call last): File "/home/ubuntu/mturk/1c_deploy_hit_wb_lists_test.py", line 178, in <module> deployHITs(client, preview_url, args.start_index, args.end_index, args.logdir) File "/home/ubuntu/mturk/1c_deploy_hit_wb_lists_test.py", line 30, in deployHITs whitelist_qualification_id, blacklist_qualification_id = manage_qualification_lists( File "/home/ubuntu/mturk/1c_deploy_hit_wb_lists_test.py", line 138, in manage_qualification_lists client.associate_qualification_with_worker(QualificationTypeId=whitelist_qualification_id, File "/home/ubuntu/stool/lib/python3.10/site-packages/botocore/client.py", line 530, in _api_call return self._make_api_call(operation_name, kwargs) File "/home/ubuntu/stool/lib/python3.10/site-packages/botocore/client.py", line 960, in _make_api_call raise error_class(parsed_response, operation_name) botocore.exceptions.ClientError: An error occurred (ParameterValidationError) when calling the AssociateQualificationWithWorker operation: The value "A1B8BFBK7T6YWJ" is not valid for the parameter WorkerId. (1691603149014 s)

Is there a way to create qualification with list of worker IDs that are allowed or forbidden to work with HIT?