Solution : https://service.sap.com/sap/support/notes/116784 (SAP Service marketplace login required)
Key words : 
additional key words sales price valuation, sales price valuation, goods issues initiated, affects mass processing, affects retail customers, valuation area, sales receipt, price determination, retail customers, goods issue
Related Notes : 
       
| 213546 | HPR collective note: POS inbound | 
| 137703 | Continuous performance deterioration | 
| 118924 | Parallel processing of IDocs in the POS inbound |