FM to update table LIKP with fields BOLNR and ANZPK

Hello experts,

We are having an inbound idoc for delivery and we have an extension with fields BOLNR and ANZPK and we need to update table LIKP.

we are using FM SD_IDOC_INPUT_PICKING to do the update.

This FM is attached to the message type SDPICK.

But with this FM we are not able to update these two fields.

We have searched for some other BAPI but we are not able to find those two fields in the BAPIs.

Can anyone please help?

Thanks a lot.