idoc interface error

Hi experts

my scenario is multiple records in a file to idoc without bpm. I followed the blog provided by michal. i modified the occurances in the xsd of idoc structure and imported as external definition

I used the same external defintaion in the MM and IM. and i configured the scenario. but i got the error as <b>"Unable to interpret IDoc interface MI_Cremas04_multi_external"</b>

please help me..

Sonali