Count duplicates and add description based on index

[Barry_PL]

Hi,
I'm strugling with issue with column in PowerBi that count duplicates and adding description ("cumulatively with values")

When in column Code will be duplicates then add text that "cumulates" values in column Description

in index 1 and 2 there is duplicates in Code column - in first row in Description column there is only 1 text

in 2 row there is description from 1 row and after comma description from 2 row.

and same logic should be in 3,4,5 row (3 duplicates in Code column)
 

No.	Code	Customer agreement	Description
1	590123	ABC	Code: 590123 with customer aggrement ABC
2	590123	DEF	Code: 590123 with customer aggrement ABC, Code: 590123 with customer aggrement DEF
3	587777	XXX	Code: 587777 with customer aggrement XXX
4	587777	YYY	Code: 587777 with customer aggrement XXX,Code: 587777 with customer aggrement YYY
5	587777	ZZZ	Code: 587777 with customer aggrement XXX, Code: 587777 with customer aggrement YYY, Code: 587777 with customer aggrement ZZZ

Someone can help ?
Thank You in advance

[Barry_PL]

Code is working
THANK YOU!

[Bmejia · Accepted solution]

Try this 

Description =

VAR ThisID =YourTable[No.]

RETURN

"Code: " & YourTable[Code] & " with customer agreement " &

    CONCATENATEX(

        FILTER(

            'YourTable',

            YourTable[No.] <=ThisID

            && YourTable[Code] =EARLIER(YourTable[Code])

        ),

        YourTable[Customer agreement],

        ", Code: " &  YourTable[Code] &" with customer agreement " ,

        YourTable[Code]

        )