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Enum describing possible targeting dimensions.

UNSPECIFIED Not specified.
UNKNOWN Used for return value only. Represents value unknown in this version.
KEYWORD Keyword criteria, for example, 'mars cruise'. KEYWORD may be used as a custom bid dimension. Keywords are always a targeting dimension, so may not be set as a target "ALL" dimension with TargetRestriction.
AUDIENCE Audience criteria, which include user list, user interest, custom affinity, and custom in market.
TOPIC Topic criteria for targeting categories of content, for example, 'category::Animals>Pets' Used for Display and Video targeting.
GENDER Criteria for targeting gender.
AGE_RANGE Criteria for targeting age ranges.
PLACEMENT Placement criteria, which include websites like '', as well as mobile applications, mobile app categories, YouTube videos, and YouTube channels.
PARENTAL_STATUS Criteria for parental status targeting.
INCOME_RANGE Criteria for income range targeting.