Conditional grouping in a pivoty query mysql - mysql

Question

My schema looks like,
CREATE TABLE `test` (
`Id` int(11) NOT NULL,
`CategoryName` varchar(45) DEFAULT NULL,
`type` varchar(40) DEFAULT NULL,
`value` decimal(15,4) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;
INSERT INTO `test`
(`Id`,
`CategoryName`,
`type`,
`value`)
VALUES
(1 ,'Allowance' ,'ADDITION',4000),
(1,'Salary' ,'ADDITION',1500),
(1,'Telephone' ,'ADDITION',200),
(1,'Other' ,'ADDITION',500),
(1,'Fine' ,'DEDUCTION',500),
(1,'Other Deduction' ,'DEDUCTION',500),
(1,'Salary Deduction' ,'DEDUCTION',100),
(2,'Salary' ,'ADDITION',300),
(2,'Other' ,'ADDITION',1300)
;
The requirement is to show certain categories summed up and others as is. In this case Salary & Allowance to be shown on their own columns, while any other addition type to be summed up. Same applies to the deduction type.
select Id,MAX(CASE
WHEN CategoryName = 'Salary' THEN pi.value
ELSE 0
END) AS 'Salary',
MAX(CASE
WHEN CategoryName = 'Allowance' THEN pi.value
ELSE 0
END) AS 'Allowance',
MAX(CASE when pi.type = 'ADDITION' THEN
CASE
WHEN CategoryName not in ('Salary','Allowance') THEN pi.value -- sum(pi.value)
ELSE 0
END
END) AS 'Other Allowances',
MAX(case WHEN CategoryName = 'Fine' THEN pi.value -- sum(pi.value)
ELSE 0
END) AS 'Fine' ,
MAX(CASE when pi.type = 'DEDUCTION' THEN
CASE
WHEN CategoryName not in ( 'Fine') THEN pi.value -- sum(pi.value)
ELSE 0
END
END) AS 'Other Deductions'
from test pi group by Id;
Now when i put sum(pi.value) I get error Error Code: 1111. Invalid use of group function. Without the sum function the max is returning the max value only and ignoring the rest, like the Telephone addition, which is as expected.
Id Salary Allowance Other Allowances Fine Other Deductions
1 1500.0000 4000.0000 500.0000 500.0000 500.0000
2 300.0000 0.0000 1300.0000 0.0000 *null*
So the Other Allowance column for id 1 should show 700 i.e. 500 (Other) + 200 (Telephone)
What would be the right way to get the sum in this case while using the pivot query ?
dbfiddle