Duplicate Check DB - Search help (Match Code) example

Hello,

I'm trying to create a Duplicate Check for a Custom MDG Data Model. I need an example of a Search Help that does the actual searching.

Like in the BP scenario I see that the MC_BP_ADDRESS or MC_BP_GENERAL match codes are assigned in the Duplicate check for Search mode DB in the configuration.

Those search helps are not in the system, so I have no example of the actual Search help and how it needs to look like.

Is there someone who implemented Duplicate Check with Search mode DB and access class CL_USMD_SEARCH_DATA_DB?
I assume that need to develop my own search help and return the matches back for the Duplicate Check to work.

Let me know if you've done it... I also don't understand why I can't find the MC_BP_GNERAL search helps in SE11 and why they don't appear in the dropdown box for this configuration.

Thanks in advance,

Boris