adprime/zeroOpen account
GlossaryArticleOperator-judged

Inventory source

The exchange or SSP name a campaign may buy. In this product it is an allowlist. Empty is unrestricted, not curated.

Published 2026-09-09 · Search job: inventory source programmatic

Inventory source is the exchange or SSP identifier on a bid: OPENX, PUBMATIC, and the other names that show up in supply reports. Targeting it decides which sources a campaign may win.

In Adprime Zero this field is an allowlist. You list the sources that may serve. There is no exclude form of the same key. Removing one source means restating every source you still want. If the campaign never set a list, it is unrestricted remnant.

Supply Audit apply clones targeting and subtracts a flagged source. If there was no buyer list, it can fall back to sources observed on a covered run and will say reach narrowed. It will not apply a list that matches nothing.

Same creative, different sources, different click rates. The August 2026 Supply Bench pull showed OPENX at 0.111 percent CTR and SMARTADSERVER at 3.074 percent. Use that as supply grain, not as a creative award.

See open exchange waste for the mapped picture.

Related

Glossary
Allowlist

An explicit list of what may serve. On inventory source, an empty allowlist is not "all exchanges." It can compile to no inventory.

Glossary
Exchange

A marketplace that runs auctions between publishers (or SSPs) and buyers. Inventory source is how we name which exchange a campaign may buy.

Supply
Open exchange waste, mapped by grain

There is no Beeswax object named supply route. Waste shows up in reports by placement, site, domain, and exchange, and only some of those grains can be excluded today.

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