FM to change field LIKP-FAKSK

Hi Experts,

I am searching for a function module or BAPI to change the field LIKP-FAKSK in delivery. I already tested BAPI_OUTB_DELIVERY_CHANGE, BAPI_OUTB_DELIVERY_CONFIRM_DEC etc. but they do not contain the field LIKP-FAKSK.

Any ideas which FM I can use for this?

Regards

Henryk