Inventor GD&T Annotation - Default DatumID/FeatureID Symbol and Style

[e_frissell]

Hi guys,

20 year vet of learning and applying GD&T and got a new one I've never seen before.  I found this on a drawing for a project I'm responsible for and the drawing went from me, to the drafter, to the checker, and then out the door.  So I'm in the inspection room looking at this drawing while standing next to my manager and this catches my eye so I ask him what this letter is in the box below the flatness target on my and he says it's Inventor's built-in datum identifier.  Well lo and behold I get back to Inventor and see this Feature Control Frame dialog box with the Datum Identifier label but when I look in the styles it's called FeatureID which is different than Datum ID.

Now, I'm pretty familiar with datum identifier symbols and have never seen one labeled this way so I'm wondering if anyone familiar with this may be able to tell me if this is an acceptable method of identifying a datum, or if this is supposed to label a feature so the feature can be referenced off of a datum?  Or maybe there's another way of looking at this?

e_frissell_1-1724080346797.png

e_frissell_0-1724080326814.png

[blandb]

It has been since about 2010 since I have GDT, but isn't that labeling that surface as Datum A as well. I have I have seen the image like below in the past, but maybe a new standard or ADKS version of the same thing?

blandb_0-1724082906312.png

[e_frissell]

The explanation was "It's a built in Inventor feature so it's an acceptable method of calling out a datum identifier."  I'm wondering if "a datum identifier" was the intent of the program because in Styles Manager it's called a "feature identifier" while the typical datum identifier is called DatumID

I've always seen it the way you showed which has been per ASME Y14.5 for as long as I can remember.  I'm wondering if that identification is also acceptable, per Y14.5, or if it means something different that I've not heard of yet