Sales BOM explosion in STO sch agreement

Dear Friends,

I have a requirement where sales BOM is to be exploded in STO sch agreement.

I would like to know whether it can be done in STO sch agreement.

I tried to achieve this by making the following config.

Material master for Header part : Item category ERLA

The STO PO order type is : UB.

STO delivery TYPE : NL.

Item category :NLN

Changes made in NLN

Structure scope set to - A

Application as SD01

In order to delivery copy control : Routine 301.

With all these settings in place i am not able to explode the BOM.Kindly let me know if anything else is to be done in addition to this.

Thanks.