How to Rank without the same ID

[rainchong7401]

Hi Friends,
How do I do ranking within the same vouchers & find the latest accountnum I have.
As expected output shown in the picture.
I want to do it in "Data" add column and add it in.
Kindly assist me and provide code if can.
Really thank you.

[Jihwan_Kim · Accepted solution]

Hi,

Please try something like below.

Please check the below picture and the attached pbix file.

Rank CC =
RANKX (
    FILTER ( Data, Data[Voucher] = EARLIER ( Data[Voucher] ) ),
    Data[AccountNum],
    ,
    DESC
)

[rainchong7401]

Kamsahamnida hyung. 
Really appreacited your respond.