Hi,
I tried setting the PLANS field to manual default '99999999'. But on execution, the form gives error as "S 99999999 not found". Just to update you I have SAP_PD service also included along with SAP_PA.
I have then tried of creating an advanced generic service for updating the position in FLUSH method. But the BADI implementation is not getting linked to the custom generic service created.
Please find the below screenshots for reference.
Thanks,
Shraddha