A group of fields used as keys for a frequency cap. There can be no more than one frequency cap with the same key.
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The level on which the cap is to be applied (for example, ad group ad, ad group). The cap is applied to all the entities of this level. |
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The type of event that the cap applies to (for example, impression). |
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Unit of time the cap is defined at (for example, day, week). |
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Number of time units the cap lasts. |