how to replace missing value

[hjjijkkl]

I have a big data with 100+ variables and I want to keep records depending on the "Incident" variable. For example, I want to keep records only were the incident variable during (week0) is not missing "test and/or "date" variable. But, If the incident variable is missing "test" and "date" values during (week0) then I want to replace (or keep)  the "1_week0" value in place of the week0. Please look the table below as an example and the outcome.

ID	Incident	test	date	Result
1	Week0	34	2/2/2021	90
1	1_week0	40	3/4/2021	56
2	Week0	.	.	100
2	1_week0	84	5/12/2021	34
2	Week1	50	5/23/2021	67
3	Week0	43	3/8/2021	98
3	1_week0	10	4/21/2021	80
3	Week1	23	5/1/2021	45
4	week0	.	.	76
4	1_week0	64	3/7/2021	78

This is how I would want the outcome to look like 

ID	Incident	test	date	Result
1	Week0	34	2/2/2021	90
2	1_week0	84	5/12/2021	34
3	Week0	43	3/8/2021	98
4	1_week0	64	3/7/2021	78

[PaigeMiller]

Please provide a portion of your data in a usable form, according to these instructions: https://blogs.sas.com/content/sastraining/2016/03/11/jedi-sas-tricks-data-to-data-step-macro/

[Reeza]

data want;
set have;
where not missing(test);
by ID;
if first.ID;
run;