def METHOD_NAME(pacu:Main):
    msg = pacu._parse_data_command_sub_service(service_data, 'non_existent_sub_service')
    assert 'Sub-service not found. Please use the sub-service name below.' in msg
    assert 'lowercase_key\tUPERCASE_KEY\tMixCase_Key\tno_data_key' in msg