'How to avoid duplicate elements in slice in json validation?

Although I am not a pro-Golang developer, I am trying to restrict the duplicate elements from my array in struct during JSON validation.

type Test struct {
Test []*string `json:"test" validate:"required,min=1,max=10,excludes=duplicate"`
}

I am using excludes parameter but it's not working for me.

Solution 1:^[1]

For array & slices you should use the unique tag.

type Test struct {
    Test []*string `json:"test" validate:"required,min=1,max=10,unique"`
}

Checking the docs:

For arrays & slices, unique will ensure that there are no duplicates

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Solution	Source
Solution 1	ryuk