Summarize data according to max event_id

hi, Anonymous

After my test, you may try to this way as below:

Step1: Add a calculate column

Use EARLIER Function to find MAX("requisition_event_id") for each "requisition_id"

MaxEventID = 
CALCULATE (
    MAX ( 'eta requisition_life_cycles'[requisition_event_id] ),
    FILTER (
        'eta requisition_life_cycles',
        'eta requisition_life_cycles'[requisition_id]
            = EARLIER ( 'eta requisition_life_cycles'[requisition_id] )
    )
)

Step2: Add a calculate measure

Add a measure that Count (requisition_id)

Count of requisition_id = CALCULATE(COUNTA('eta requisition_life_cycles'[requisition_id]))

Step3: Create a visual

Drag the field MaxEventID and measure Count of requisition_id into visual

Best Regards,
Lin