Remove duplicates based on values

[PowerBIplane]

I am very new to BI and i am tying myself in knots.

I have the following set of data:

 

I have to filter the set so anything with a Service_ID equal to 133 or 134 is kept

If another row has a Service_id is 133  or 134 but the Event_id is equal to a row with the same Event_id and an invalid service_id this row is also Filtered out.  So the data should look like the following:

I can filter down but cannot work out the syntax to evaluate

Hope this explains

regards

[Greg_Deckler · Accepted solution]

I believe what you want is something like:

Measure 6 = 
VAR __eventID = MAX([Event_ID])
VAR __table = ADDCOLUMNS('Table4',"__count",COUNTX(FILTER(ALL('Table4'),[Event_ID] = EARLIER([Event_ID]) && [Service_ID]<>133 && [Service_ID]<>134),[Service_ID]))
RETURN
IF(SUMX(__table,[__count]) = 0,1,0)

See Page 6, Table4

[PowerBIplane]

thanks for that.  it done what I required.