Performance of Physical Inventory IDOC WVINVE03

HI ,

We are trying to post Physical Inventory count through IDOC WVINVE03 , and although the IDOC gets created properly with 400 articles, the Physical Inventory Number after the posting of IDOC is getting generated in batches of 20 articles. That is 20 Physical Inventory got generated for 400 Articles .

We are using Is Retail, Ecc 6.0 , can anyone help in suggesting why this is happening , and whether we are missing any config ?.

REgards,

Binayak