RM06BBI0 - Network Activity

Hello,

I am using Batch Input RM06BBI0 in LSMW to load open Purchase Requisitions. Everything is working smoothly until I load the PR with account assignment N. For network PR, it will look for activity, however, I could not find the field COBL-VORNR in EBAN or EBKN. Instead I found it in structure BLZKN. Problem is, I do not see the link between EBAN/EBKN to ESLL.

I  have tried using BAPI BUS2105 as well but it is giving me error 'An error has occurred assigning data (E1BPMEREQITEM)'.

Is there any other way to load Open Network PR?

Thanks in advance!