Add WBS Milestones to sales order

• Use SAP transaction VA02
• Enter your sales order number and press enter

• Use menu Goto->Header->Billing plan
• On the next screen click on the Milestones button at the bottom

 

• Now enter your WBS number into the field and press enter or the green tick

 

• Now select the milestones that you want to add to the sales order and press copy

•  Now return to the previous screen using the back button and SAVE your sales order

 

For any ABAP code you need to look at SAP table FPLT to see all milestones that have been added to sales orders (FPLT-MLSTN)