3da1f7ed__AdCenter__LookSmart__API_v4_0__Type
[Field] match_type_id [Description] Keyword match type. At present the folllowing matchtypes are supported: 0=exact 1=broad 3=negative. If null passed, defaults to broad match. When used to create or update an ad keyword, match_type_id has the following validations: match_type_id may not be 3 if there is not at least one broad match keyword already linked to the ad group. [Type] 
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LookSmart® AdCenter: LookSmart® API v4.0
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