We have found that we can include in a Data Feed (in order to ingest that data in our Data Lake) the Last and First Touch Channel ID. Not the name of the channel, because, being processed data is imposible to have the name in the hit.
But there is no way to have a matching table, because it´s not possible to automate an export of the Marketing Channels names with the ID, we can export the variables using a DWH, but there´s no variable for the ID.
It will be very useful to be able to program export of the Marketing Channels definition with IDs and corresponding names.
