Content: All taxonomy terms is acting as empty

I have the same issue with non-published content and "all taxonomy terms" field. I've traced the issue to the views field handler's usage of the "taxonomy_index" table, which stores all of the taxonomy entries for each node (but only published node content is added to this index).

There is a conversation going on here: #962664: Taxonomy Index for unpublished entities talking about this functionality and how it changes with views coming into the core. In the meantime, I found a functioning solution in enabling https://drupal.org/project/taxonomy_entity_index, which builds a new table that includes unpublished content (and provides a parallel but similar views field to "all taxonomy terms".

I don't know whether it is relevant over here or not. I am using a filed as 'Configure field: Content: All taxonomy terms ' in View page. I am able to get the desire output at page view. but when I am trying to fetch the output at the view page service I am getting NULL value for that particular field

I am able to see the output at the view page table but while creating its services it showing NULL value.
my services output is

{
asset_id: "1821",
asset_name: "testing",
company_id: "3327",
classification_id: null,
keywords_id: null,
directories_id: null,