Thank you knut.heusermann for this useful blog. I would like to extract codes and their related description for extension fields we have created in the Product master data. Is it possible? I've tried with the querymaterialin wsdl but I have this err...

Thanks! it works 

Thank you Divya for this great explanation! I follow your instructions, the mashup is activated but I can't find it in the adaptation mode: the pop up window "available mashup for this screen" remains empty. I can not find the one I've created   ...