Solution : https://service.sap.com/sap/support/notes/1137351 (SAP Service marketplace login required)
Key words : 
terms uomgr  msehi  oib05  marco1  isego2  physical inventory document  msego2 material document   o1/ o2 tables  hpm  hydrocarbon product management reason, hpm material, 'define additional stockkeeping units, material documents, 1 week project execution, system landscape optimization, test conversion cycles, inconsistent stock levels, solution slo consulting, stock levels
Related Notes : 
       
| 145824 | IS-OIL: Recommendations on Unit of Measure Group entries |