Hi Ambi, I know for some of the access policies, you can right click and 'Save' from the GUI (be sure to select subtree and configuration only).
But also, check this out.
Physical Domain
<polUni dn="uni">
<physDomP name="physdom" ownerKey="" ownerTag="">
<infraRsVlanNs tDn="uni/infra/vlanns-[vlan_pool_name]-static"/>
</physDomP>
</polUni>
VPC Pairings
<fabricInst ownerKey="" ownerTag="">
<fabricProtPol descr="" dn="uni/fabric/protpol" name="default" ownerKey="" ownerTag="" pairT="explicit">
<fabricExplicitGEp id="1" name="Leaf101_102">
<fabricRsVpcInstPol tnVpcInstPolName="default"/>
<fabricNodePEp descr="" id="101" name=""/>
<fabricNodePEp descr="" id="102" name=""/>
</fabricExplicitGEp>
</fabricProtPol>
VLAN Pool - You'll notice the infraInfra object here. Pretty much all of the rest of the access (policy groups, interface policies, etc) policies go under this object.
<polUni dn="uni">
<infraInfra ownerKey="" ownerTag="">
<fvnsVlanInstP allocMode="static" descr="" name="vlan_pool" ownerKey="" ownerTag="">
</fvnsVlanInstP>
</infraInfra>