Where are the Enterprise Services?

I hope anybody can help me for my diploma thesis.

I have the problem to find Enterprise Services. I dont't know in which System (ERP, PI, or other systems)

Especially i search the Enterprise Services for SAP Bank Communication Management.

In lot of documentation and examples of processes you need this Services but where can find it and how config with pi?

In my Case i should like to build a scenario with SAP ERP with BCM to SAP PI (with SWIFT Package) and from there to a Bank.

Thanks in Advance

Yours faithfully

Armin