Additions:
==Merchant Product are identified by PRDTID or MerNum + MerSKU==
When using DFF scripts and web services, we often refer to a single merchant product by **prdtid** or combination of **mernum + mersku**.
Additions:
1) [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] + mersku is a more consistent way to point to a particular product, however it is still not 100% safe, because there is no guarantee when a merchant / store may remove that particular product from their data feed file in the future. Example: if you have a Merchant Product Banner pointing to a particular Individual Merchant Product using [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] + mersku, there is a possibility in the future that the banner will stop working because the [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] / mersku may not exists anymore.
Deletions:
1) [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] + mersku is a more consistent way to point to a particular product, however it is still not 100% safe, because there is no guarantee when a merchant / store may remove that particular product from their data feed file in the future. Example: if you have a Merchant Product Banner pointing to a particular Individual Merchant Product using [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] + mersku, there is a possibility in the future that the banner will stop working because the [[http://wiki.datafeedfile.com//wikka.php?wakka=dffMerInfo mernum]] / mersku may not exists anymore.
