Go to the Publisher listing page, click the Edit icon next to any publisher, and navigate to the Source tab. View all active sources — such as IBM1, SUB89, and GSRC — each showing a green checkmark confirming they are active.

Click on any source name — for example IBM1 — to see which buyer campaigns are mapped to it. On the right side you will see the Source Name and all linked Campaign Names — for example Solar Test => $8.

Go to Buyer → Campaigns, click the Edit icon next to the campaign — Solar Test => $8 — and navigate to the Filters tab. Here you will see the complete Filter List on the left including Universal, Limit, Email, Age, Zip, SubID, and Source filters.

Click on the Source filter from the Filter List — shown with a green checkmark indicating it is active. The filter configuration will appear on the right side.

Set up the Source filter with the following configuration:

• Filter Name — enter a name such as “Source”
• Field — select Source from the field dropdown
• Operator — select IN COMMA SEPARATED to match multiple source values
• Value — enter the source names to filter — for example IBM1 and GSRC

In the THEN section, select ACCEPT to accept leads matching these sources or REJECT to block them. Then select the posting method — Ping/Post or Direct Post.

Click Click here to add a row to add additional filter conditions — combining multiple field rules for more advanced source-based filtering logic.

Click Save to apply the configuration. The buyer campaign will now only accept leads originating from the defined publisher sources — IBM1 and GSRC — ensuring precise source-based lead quality control.