Value of EBELP Purchase Order Item in Output Type Routine

Hello,

I an facing a problem in retrieving the value of EBELP : Purchase Order Item, while I am executing an 'ME' Output Type.

[The Output Type is of ME Application]

When I execute the transaction MB0A for posting with reference to Purchase Order, the routine for Output Type gets invoked and I get the value of Purchase Order in the structure KOMPBME-EBELN but not its item EBELP. The parameter ID for EBELP is also not giving the value.

GET PARAMETER ID 'BSP' FIELD l_ebelp. => is empty.

This is kind of urgent. Could you please help?

Thank you,

Gayatri