We have a sendlog enabled for our account to capture all sends from all BUs.
In the SendLog DE, in past we added the personalization string %%emailname_%% to capture emailname as well (of course without %%). In SendLog DE, the exact field name is - emailname_
- emailname_ field has been capturing the email name for years now.
You can view all personalization strings listed here: https://help.salesforce.com/s/articleView?id=sf.mc_es_available_personalization_strings.htm&type=5
Now, we want to capture the sendable audience data extension as well for all email sends in the SendLog and salesforce support suggested to add personalization string %%_DataSourceName%%, so I tried adding the field _DataSourceName in the SendLog DE but it looks like data extension does not allow field name to start with an underscore _.
In this case, what is the solution and how to add _DataSourceName in the SendLog? Any advise?