Generating safety stock requirement for ATP

Hi

I am trying to generate SS requirement for product availability check (GATP).

I have done following settings in APO.

1. Safety stock method in product master = SB. SS quanity is maintained.

2. Model version mgmt parameter = 3 (Consider Safety Stock Requirements in SAP liveCache)

3. Category of SS requirement is 'SR' which is included in the relevant scope of check.

But the safety stock requirement is not getting generated when I check it in product view (both in 'elements' and 'ATP tab') after running the report /SAPAPO/RRP_SR_ATP_GENERATE.

Note - SNP/PPDS not in use.

Thanks,

Yogesh