Could not determine ERP stock data for: DK55 0000000220 F1

Error while confirm the WT that show

Could not determine ERP stock data for: DK55 0000000220 F1.

My Business system was define as BSG. But assign WH number from logistic execution the BSG cannot select . ERP and EWM warehouse only map with blank. Map Slocation for ERP and EWM done. Not sure why this error. Any advice welcome. Thanks