what is the "source" constraint supposed to contain in a "Data Value Changes" trigger ?

[Victor_Herrero]

@Frank_Breen2 @Grégoire_Miche2 @Dan_Stevens_ 

I would like to pick up this topic again, maybe we should just involve support for it. 

I have been able to confirm that "sfdc" is an accepted value for source and "salesforce.com" is not... 

Did this behavior change over the years maybe?

The following list throws 0 results ("salesforce.com")

Whereas this list shows results ("sfdc")

I was trying to determine whether a change was made manually or automatically (using "is" or "is not" on "sfdc")

[Victor_Herrero]

I have been able to confirm the following constraints: 

• Web Form Fillout
• Web Service API
• Marketo Flow Action (not entirely sure if actual smart campaigns are under this umbrella, but automatic processing of segment placing is)
• sfdc