"Error Specified List/Container Must Not Contain Any Null Elements"

What Is The Issue?

When copying or creating creatives for A/B testing, the operation may fail and you may encounter the following error message:

Error Specified list/container must not contain any null elements

What Causes The Issue?

This problem is a result of copying or creating image creatives without uploading images. And it is most commonly caused in one of the following situations:

  1. When copying image creatives from one group to another by using the Copy function.
  2. When creating new image creatives for A/B testing.

How To Fix The Issue

You should re-create any image creatives and upload the images to the platform. Then delete the creatives in Sync Error.

Note: If performing an A/B testing, you will need to create two image creatives within the same group and set the creatives to rotate evenly.

Written by Marketing @ Marin Software

Last published at: December 6th, 2023