Dear Experts,
How do i control creation of PDS because of operaion generated from planned delivery time,although planed delivery ime is zero.
the scenario is as follows:
Material :XXXXX
Planned Delivery time 
Procurement Type:E
Plant:XXXX
in transaction /sapapo/curto_simu: there are two PDS displayed with PDS usage as PDS for Supply Network Planning(SNP)
the first one is because of operation generated fromm planned delivery time,output qty is the same a s that maintained as base qty in BOM and mode is blank,activity field is even blank.
the other PDS is created because of the valid production version in R/3.
Thanks in advance
Amrish