filter needed if a same id has 2 or more observations

[vraj1]

I have a dataset which has some of the id's multiple and i n that case i only want the first.

For example if i have like below table i only need id 101 for type as A and not B record same with 103.

any help

ID	type	lcd	vis
101	A	cust	1
101	B	cust	1
102	A	cust	2
103	A	cust	1
103	B	cust	1
104	A	sal	3
104	B	sal	4

[Criptic]

Use the first functionality in the data step e.g.

data aaa;
 set your_table;
 by id;
 if first.id then output;
run;