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javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint 'javax.validation.constraints.Size' validating type 'java.lang.Integer'. Check configuration for 'discounted'

My code is:

@Column(name= "discount_percentage")
@Size(min=0, max=90)
@Min(0)
@Max(90)
private Integer discountPercentage = 0;
I set it to 0 because i was getting a NullPointerException when loading my view.
And is Integer because i was reading in others question, and some people says that sometimes there are problems when using @Size with primitive types. 
What should i do? Thanks in advance.
@Size is a Bean Validation annotation that validates that the associated String has a value whose length is bounded by the minimum and maximum values. And as your exception says it does not apply to Integer type.
Use: @Range
@Column(name= "discount_percentage")
@Range(min=0, max=90)
private Integer discountPercentage = 0;
Or you cloud also use only @Max or @Min and that will work too. For more info please take a look on this link.
                Note that @Range is found in org.hibernate.validator.constraints, and not in javax.validation.constraints
– jumping_monkey
                Mar 24, 2020 at 9:40
@Size is not used to validate min/max.
It's used to validate size of collections, length of strings, etc.
In this case you should use @Min, @Max instead.
Refer here for complete document: https://docs.oracle.com/javaee/7/api/javax/validation/constraints/Size.html
I have observed this pattern when, the parameter type does not match with validator. as here List<String> is not matiching List<Long>
Ex Validator:
public class MaxValidation implements ConstraintValidator<MaxParameterSize, List<String>> {
Annotation Use :
    public Response abc(@NotNull @MaxParameterSize(10) List<Long> parcelIds { 
        
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