Summation of values in rows with same ID

[PBI-Beginner]

Hi All,

I am a fairly new user of PBI and have spent all day on the forum trying to do something rather simple.

I am trying to come up with a DAX measure to sum the "RECORDED_VALUE" of rows with the same "ID". Below is a snippet:

This is the DAX measure I have been using which I came up with after guidance on this forum:

I am at my wits' end, and cant figure out why I am getting a value of 1,208.19 (first four rows with same ID) for something that should be (27+26.14+25.70+26.18=105.02).

Any help will be appreciated!

Regards