Please refer to Adform Help Center for more information on how to get required ad tag or placement IDs.
<amp-ad width=320 height=50
type="adform"
data-bn="12345">
</amp-ad><amp-ad width=320 height=50
type="adform"
data-mid="12345">
</amp-ad><amp-ad width=320 height=50
type="adform"
src="https://track.adform.net/adfscript/?bn=4849385;msrc=1">
</amp-ad>data-bndata-midsrc
Only one of the mentioned parameters should be used at the same time.
The src parameter must use https protocol and must be from one of the
allowed Adform hosts.