MRP run MD01 planned order instead of PR

Hi,

While running MRP , MD01 with setting

Processing key NETCH
Create purchase req. 1
Schedule lines 3
Create MRP list 1
Planning mode 1

Scheduling 1

Planning date 22.06.2012

User exit key MRP for Vb & Vm MRP type material

Material Master setting :-

MRP1

MRP Type VB

Reorder Point 2

Lot size HB

Minimum Lot Size 1

Maximum Lot Size 6

Maximum stock level 2

MRP 2

Procurement type F

Planned Deliv. Time 21

GR Processing Time 2,

Safety Stock 1

Planning Horizon 120 Days Refered all answers on SDN previously but still Planned orders generated.

Regards,

Harish