Solution : https://service.sap.com/sap/support/notes/1475765 (SAP Service marketplace login required)
Key words : 
po memo lines- missing po memo lines- po memo line, goods receipt- po memo lines, stock transport order item, -steps stock transfer procedure, implement standard correction instructions, related purchase order number, partly   purchase order number, -step stock transfer procedure, sap standard scenario 'sped', partly outbound delivery  number
Related Notes : 
       
| 1237666 | Only one PO memo item is created on APO side |