# Creative assets upload

Upload creative assets to the system and create atomic creatives. This endpoint processes the uploaded 
files and metadata, validates them, and stores them permanently in the system. Once uploaded, the 
creatives can be associated with campaigns and strategies.

Endpoint: POST /creative_upload
Version: xx.xx.xx
Security: Auth0

## Request fields (multipart/form-data):

  - `filename` (array, required)
    Creative asset files to upload

  - `metadata` (object, required)
    JSON string containing metadata for all files

  - `metadata.advertiser_id` (integer, required)
    Example: 123

  - `metadata.is_https` (boolean)

  - `metadata.submissions` (array, required)

  - `metadata.submissions.name` (string, required)
    Example: "one.jpg"

  - `metadata.submissions.click_through_url` (string, required)
    Example: "https://example.com/clickThrough"

  - `metadata.submissions.landing_page` (string)
    Example: "https://example.com/landing"

  - `metadata.submissions.concept_id` (integer, required)
    Example: 123

  - `metadata.submissions.backup` (string)
    Optional backup image filename for HTML5 creatives. Used as a fallback when HTML5 content cannot be displayed.
    Example: "backup_image.jpg"

## Response 200 fields (application/json):

  - `data` (array)

  - `data.id` (integer)

  - `data.version` (integer)

  - `data.entity_type` (string)

  - `data.advertiser_id` (integer)

  - `data.concept_id` (integer)

  - `data.concept_name` (string)

  - `data.name` (string)

  - `data.width` (integer)

  - `data.height` (integer)

  - `data.file_type` (string)

  - `data.is_https` (boolean)

  - `data.is_multi_creative` (boolean)

  - `data.has_sound` (boolean)

  - `data.rich_media` (boolean)

  - `data.status` (boolean)

  - `data.built` (boolean)

  - `data.build_date` (string)

  - `data.built_by_user_id` (integer)

  - `data.created_on` (string)

  - `data.last_modified` (string)

  - `data.external_identifier` (string)

  - `data.tpas_ad_tag_name` (string)

  - `data.updated_on` (string)

  - `data.click_url` (string)

  - `data.ad_format` (string)

  - `data.expansion_trigger` (string)

  - `data.expansion_direction` (string)

  - `data.ad_server_type` (string)

  - `data.t1as` (boolean)

  - `data.edited_tag` (string)

  - `data.click_through_url` (string)

  - `data.approval_status` (string)

  - `data.media_type` (string)

  - `data.is_mraid` (boolean)

  - `data.sizmek_tag_status` (string)

  - `data.sizmek_creative_status` (string)

  - `meta` (object)

  - `meta.count` (integer)

  - `meta.total_count` (integer)

  - `meta.offset` (integer)

  - `meta.next_page` (string)

## Response 400 fields (application/json):

  - `data` (object,null)

  - `meta` (object)

  - `meta.status` (string)

  - `meta.error` (string)