MAX date based on another column

Hi learner03 ,

It could be a DAX measure that is causing the circular dependency.
I tried to create data to reproduce your problem, here are my test steps：
Test data

Apply your calculate column

Here's my modification of this dax to achieve your goal

LastUpdateDate = 
CALCULATE(
    MAX('Table'[Date update]),
    FILTER(
        'Table',
        'Table'[A&B] = EARLIER('Table'[A&B])
        && NOT(ISBLANK('Table'[Date update]))
    )
)

Final output

You can refer to this link for more information on cyclic dependencies
Avoiding circular dependency errors in DAX - SQLBI

Best regards,

Albert He

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