How to update Line item in DFKKOP using FKK_SAMPLE_0020 ( EVENT-20)

FPMA/FP06 currently only creating new document number upon clearing.

1 : My requirement is to create the line item into DFKKOP table ?

2: is that possible to generate multiple document number based on the document grouping during FPMA/FP06 document clearing posting?

Thank you so much

Regards

Theeba