Purchase Requisition Without Release Strategy

Hi Experts,

I have created release strategy with out classification for the purchase requisition doc, the steps are attached here, the release strategy is not getting triggered at the time of creation of purchase requisition doc, kindly help me to resolve the issue.

I have firstly executed the setup procedure without classification in the purchase requisition tab,

1. maintained the release code

2. maintained the release indicators

3.the release indicator is assigned to Release code

4. The release points prerequisites are maintained

5. The release strategy is determined

6. The Over all release for purchase requisition is not maintained at doc type level.

7. The purchase requisition is created

But the release strategy is not getting triggered at item level in the purchase requisition doc.

Thanks in advance.