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| === Configure Metadata ===
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| Map the Nielsen keys to variables so that the content metadata is dynamically updated.
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| The Nielsen reserved keys are:
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| {| class="wikitable"
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| |-
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| ! Key !! Description !! Data Type !! Value !! Required?
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| |-
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| | type || asset type || fixed || <code>'static'</code> || Yes
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| |-
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| | assetid || Unique ID for each article || dynamic || custom <br>(no [[Special Characters]]) || Yes
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| |-
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| | section || section of each site (e.g. section value should be first level in page URL: website.com/section). Limit to 25 unique values || dynamic || custom || Yes
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| |-
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| | segA || custom segment for reporting: Limit to 25 unique values across custom segments (segA + segB + segC) || dynamic || custom || No
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| |-
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| | segB || custom segment for reporting: Limit to 25 unique values across custom segments (segA + segB + segC) || dynamic || custom || No
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| |-
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| | segC || custom segment for reporting: Limit to 25 unique values across custom segments (segA + segB + segC) || dynamic || custom || No
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| |}
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| The values passed through the Nielsen keys will determine the breakouts that are seen in reporting. The custom segments (A, B & C) will roll into the sub-brand. To not use custom segments A, B and C, do not pass any value in these keys.
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| '''Aggregation Limits'''
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| There are limits on the number of unique values that can be aggregated on in reporting. The specific limitations by key are:
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| {| class="wikitable"
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| ! Key !! Aggregation Limit
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| |-
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| | section || maximum of 25 unique values (section <= 25)
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| |-
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| | segA || Maximum number of unique values allowed across segA, segB, and segC is 25 (segA + segB + segC<= 25)
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| |-
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| | segB || Maximum number of unique values allowed across segA, segB, and segC is 25 (segA + segB + segC<= 25)
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| |-
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| | segC || Maximum number of unique values allowed across segA, segB, and segC is 25 (segA + segB + segC<= 25)
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| |}
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