I'm getting the error message:
Warning Start Unable to set targeting attribute undefined with value index for service publisher_ads
The tealium configuration for the GPT tag for this is "ss_bs_er_section" > "Set Page-Level Targeting" > "section". It's correctly picking up that ss_bs_er_section has the value of 'index' but it doesn't seem to be picking up the attribute name (it's just calling it "undefined").
The GPT tag is set up with UTAG data objects mapped using 'Set Page-Level Targeting' in the Google Publisher Tag mapping in combination with slot mapping. The slot mapping works fine and custom, slot level variables are pushed through to the slots fine as well however page level targeted variables error out.