enum CreativeSizeType (v202005)

Descriptions of the types of sizes a creative can be. Not all creatives can be described by a height-width pair, this provides additional context.

Enumeration Description
PIXEL Dimension based size, an actual height and width.
ASPECT_RATIO Mobile size, that is expressed as a ratio of say 4 by 1, that could be met by a 100 x 25 sized image.
INTERSTITIAL Out-of-page size, that is not related to the slot it is served. But rather is a function of the snippet, and the values set. This must be used with 1x1 size.
NATIVE Native size, which is a function of the how the client renders the creative. This must be used with 1x1 size.