In order to optimize the mapping of your requested SKUs, you're invited to add the UPC/EAN code if available.
Tag it into the 6th column of the PRC file of the SKU request file (PRC): "<UPCEAN>[UPC-code]</UPCEAN>". If you use this column also for specifying the SKUs' prioritization level, just add this tag, e.g.: "<PRIORITY>1</PRIORITY><UPCEAN>545698532569785</UPCEAN>". Note that upper cases are required. The order of the tags does not matter.
