Category:CS1 maint: ASIN uses ISBN

This is a tracking category for CS1 citations that use asin where the assigned value may be an ISBN. Module:Citation/CS1 checks the ASIN value and if the value has the form of an ISBN (passes the length, composition, and checksum tests) adds the page to this category. While the value assigned to asin may appear to be an ISBN, in fact, the value may not be. It appears that 630... and 631... and some other values are not ISBNs.

When the value assigned to asin parameters is a valid ISBN, ISBN should be changed to ISBN. When there is an existing isbn parameter, the asin parameter should be removed. Associated asin-tld parameters should be removed. Pages in this category should only be added by Module:Citation/CS1.