© 2026 Schemall· The source of structured meaning
True
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productID
The product identifier, such as ISBN. For example: `meta itemprop="productID" content="isbn:123-456-789"`.
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The product identifier, such as ISBN. For example: meta itemprop="productID" content="isbn:123-456-789".
The product identifier, such as ISBN. For example: .
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