Production Plan Generation Issue

Hi Gurus,

Scenario: I am running SNP heuristics to generate production plan at plane level. before making the same I made GR time for that SKU_Plant combination "0" to ensure start date and end date of production plan generation should be same and also made SNP checking horizon for eg. 5 days to ensure PP should generate on 6th day.

Result: PP is generating within SNP checking horizon i.e PP is seating on 4th day which I don't want.

Please suggest what settings to be maintained for my desired result.

Thanks

Prasanta