Attribution contention occurs at the product, or ASIN, level; if you select the same products in multiple orders, your attribution tags with the same promoted products will be eligible with each other for attribution.

This statement is True. Attribution contention in Amazon DSP indeed occurs at the product (ASIN) level. When the same product is included in multiple DSP orders, and those orders are configured with attribution tags for that specific product, they will compete for attribution credit if a customer purchases that product after being exposed to ads from both orders. The DSP system uses a last-touch attribution model by default, meaning the last ad exposure that led to a conversion receives credit. This contention highlights the importance of careful campaign planning and product selection across different DSP orders to avoid cannibalization and ensure accurate performance measurement.