Our version of SAP system is ECC 6.0.
When user create / change PO with tcode ME21N / ME22N that refer to PR qty is over from qty PR, there is a standard error that deliverd by SAP.
"06 076 Materials of requisition & item & alr. ordered in full E".
But when they are create / change using tcode ME21 / ME22, this standard error messages not effected.
Would you please give me a solution for this issue.....