Solution : https://service.sap.com/sap/support/notes/212981 (SAP Service marketplace login required)
Key words :
system displays message me386, additional key words me21, customer-specific adjustment, purchase order item, purchase order quantity, call transaction se37, attached correction instructions, enter 'input quantity, user exit exit_saplmdr1_001, valid decimal places'
Related Notes :
| 303613 | Missing documentation on enhancement MDR10001 |