Line Creatives
When Creative management is handled at the Line level, Creatives can be associated individually with each Line instead of being inherited from the Campaign. This is useful when different Lines require different Creative types or assets.
Note that Creatives must be uploaded and edited on the Advertiser Level. Additionally, if Manage Creatives is enabled on the Campaign level, you will not be able to associate the creative to the Line level. For more information see the following documentation:

For example, a Campaign may include separate Video, Audio, and Banner Lines. Managing Creatives at the Line level allows the appropriate Creative type to be associated only with the corresponding Line.
Associate a Creative to a Line
- Select the desired Line.
- Enter Edit mode.
- Select Associate Creatives.
- The table on the left displays eligible Creatives uploaded under the Line’s Advertiser. Select the green (+) button next to a Creative to associate it with the Line. The Creative will move to the table on the right.
- Repeat as needed to associate additional Creatives with the Line.
- Close the Associate Creatives window.
- Select Submit in the upper-right corner of the Edit screen to save the changes.
Repeat this process for each Line to assign the appropriate Creative set.
For information on uploading, editing, auditing, and managing Creatives, see the Creatives documentation.