Bapis and IDOC for Service order... etc.

Hi Experts,

Can any body please tell me what are the bapis for creating

following things.

Create Service Order or Sales Order

Update Service Order

Goods Issue & Goods Receipt

Inventory Balanceses

Purchase Requisition Information

Purchase Order Information

For this above are there any standard inbound and outbound

idoc for data transfer.

Thanks & Regards,

Chetan