Planning board Adjust and Reschedule Block Limits

Dear Experts

I was running heuristics SAP_CDPBP_02 which is not getting execute successfully it showing Executed without result .What are the major settings I need to check .

In settings of heuristic i have maintain scheduling horizon has 20 days .

I have maintain 3 blocks in that two  blocks are  empty and one block is full . But it is not Increasing size of overloaded block or it is not shortening the free block

I have maintain my strategy profile  as below :

Scheduling mode has find slot

finite capacity Time continuous capacity and Bucket capacity

Finiteness lvl 0000

Planning direction backward + Reverse

Your help will be highly appreciated

Thanks & Regards

Jaisree