Solution : https://service.sap.com/sap/support/notes/372859 (SAP Service marketplace login required)
Key words :
error message me816 'system error, additional key words ki222, error-free document posts, enjoy purchase order me21n, previously created commitments, error occurs, program error, system terminates, purchase order, incorrect document
Related Notes :
| 416561 | ME21N commitments, availability check runs incorrectly |
| 382383 | Incor.commts update through aut.PO genratn fm PREQs |
| 365771 | ME21N Holding a purch order after commitments error |