Solution : https://service.sap.com/sap/support/notes/875658 (SAP Service marketplace login required)
Key words :
menu path extras -> allowed units, displays error message mm 328, allowed unit, product units, program error, transaction mmbe, selected unit, choose refresh, print output, system issues
Related Notes :
| 871620 | MMBE: Print output without current selection parameters |
| 867986 | MMBE: Decimal places not displayed according to UoM |
| 792622 | MMBE: Unit of measure field is language-dependent |