Display Error message for items in ME21N

Hi everybody,

i made some controls for items order using the User-Exit EXIT_SAPMM06E_006.

If the control don't pass, i display an error message using MESSAGE instruction.

The probleme is when i'm doing it, the Error message is display in the task bar, as a general message and not just for the item controlled (statut field).

So how can i do to display my message with the message list for the item ?

Thanks in advance.