Counting and Ranking unique IDs

[Anonymous]

I am looking to Count and Rank unique IDs associated with one unique value. This table from another post is very close to what i'm looking to do. However, I keep getting the error "Earlier/Earliest refers to an earlier row context which doesn't exist". I'm completely puzzled. 

[v-jiascu-msft]

Hi @Anonymous,

Could you please mark the proper answers as solutions?

Best Regards,

Dale

[v-jiascu-msft]

Hi @Anonymous,

It's a calculated column in the post of your link. Maybe you want a measure that can't use the formula directly. It could be something like below. Please share a sample of yours.

Column =
RANKX ( ALL ( Table1[Address ID] ), CALCULATE ( COUNT ( Table1[PersonID] ) ) )

Best Regards,

Dale

[Jkaelin]

Can you provide more context please?  Thank you  & welcome to the forums.

[SteveCampbell]

Can you post an example of your columns / data?