I've tried about 20 different combinations of Google DFP tags in adUrl: (See below for a handful of examples)
Everything I try shows up as Unfilled impressions in the DFP report. Can anyone give me a sample that I can just plug my ID into that will work?
https://pubads.g.doubleclick.net/gampad/ads?sz=400x300|640x480&iu=/61619484/Heart_Roku&impl=s&gdfp_req=1&env=vp&output=vast&unviewed_position_start=1&url=[referrer_url]&description_url=[description_url]&correlator=[timestamp]
http://pubads.g.doubleclick.net/gampad/ads?sz=640x360&iu=/61619484/iab_vast_samples/skippable&ciu_szs=300x250&impl=s&gdfp_req=1&env=vp&output=xml_vast2&unviewed_position_start=1&url=[referrer_url]&correlator=[timestamp]
http://pubads.g.doubleclick.net/gampad/ads?sz=640x480&iu=/124319096/external/ad_rule_samples&ciu_szs=300x250&ad_rule=1&impl=s&gdfp_req=1&env=vp&output=vmap&unviewed_position_start=1&cust_params=deployment%3Ddevsite%26sample_ar%3Dpremidpost&cmsid=496&vid=short_onecue&correlator=
http://pubads.g.doubleclick.net/gampad/ads?sz=640x480&iu=/61619484/external/ad_rule_samples&ciu_szs=640x480|400x300&ad_rule=1&impl=s&gdfp_req=1&env=vp&output=vmap&unviewed_position_start=1&cust_params=deployment%3Ddevsite%26sample_ar%3Dpremidpostpod&cmsid=496&vid=short_onecue&correlator=
https://pubads.g.doubleclick.net/gampad/ads?slotname=/61619484/external/ad_rule_samples&sz=640x480&ciu_szs=300x250&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&vad_type=linear&vpos=preroll&pod=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&cust_params=deployment%3Ddevsite%26sample_ar%3Dpreonly&url=[referrer_url]&description_url=[description_url]&correlator=[timestamp]
http://pubads.g.doubleclick.net/gampad/ads?slotname=/61619484/external/ad_rule_samples&sz=640x480&ciu_szs=300x250&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&vad_type=linear&vpos=preroll&pod=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&cust_params=deployment%3Ddevsite%26sample_ar%3Dpremidpost&url=&video_doc_id=short_onecue&cmsid=496&kfa=0&tfcd=0
