mensaje: L3009 No destination storage bin to be found in storage type ....

Hello experts

I have a problem when i try to create TO with TCode LT03, for inbound delivery, "mensaje: L3009 No destination storage bin to be found in storage type". but this messaje is generate when i activate a User exit MWMTO003.

If I use TCode LT03, for inbound delivery without user exit, I can create TO.

Please if anyone know how....

Thanks

Aleksei Gil