ASIN

ASIN stands for "Amazon Standard Identification Number", a supposedly more-or-less stable identifier Amazon uses to identify it's products. The objective of AmazonMatching is, effectively, to match an album ID to the corresponding ASIN, so that it can then be used to interact with Amazon's systems. Where this des not correctly work, you can add an AdvancedRelationship of the AmazonRelationshipType instead.