Not able to set deletion flag on Material using IDoc MATMAS01

Using IDoc MATMAS01 for Materail creation, Modifiction & Deletion. Creation and Modification are successful while in case of deletion facing issue

for Deletion the MSGFN = '003' and E1MARAM-LVORM = "X' ( Deletion flag ) are set.

After Idoc processing getting the Idoc status as 51 in error and in detailed log the message is

"No Description transferred '

What could be the reason. Whats the procedure to delete an existing materail through Idoc. Please update.

Thanks

ayu