Updation of PO

Hello Experts,

We have a requirement where the user fills a form and the details are updated in a table. Now these datials I have to add in the existing PO in EBP ( we are in ECS scenario )as a new line item. All the details are available in the table only thing is a new line item needs to be added in the existing PO with all these details. Is there any FM which can do this. I mean I will input the details required for creating the item and the Fm should update the PO with the a new line item

Points are guaranteed...

thanks

sankar