Hi Robin,
There is nothing to be communicated to the bank. As u can see that there are two codes i,e NMSC (for monthly charges) & NTRF (for third party charges). For EBS to post successfully, the external transactions codes needs to be mapped to an internal transaction code in SAP. If you can look in OT83, there will be two transaction codes assigned to NMSC & NTRF. On this basis, we can differentiate the charges.
Cheers
Vivek