Re: [MATMAS Inbound processing error] Material not in sales org. XXXX distrib. channel XX (Mesage no. M3 384)

Seems the material is not extended properly to the sales area. Take help of your MM functional.

Else, Debug and see, if the material number passed to the Idoc is correct ( check if it is format issue)

Cheers,

Raju Shrestha