
    Write a function that validates a banking service code where each digit represents a specific service limit, and the frequency of that digit's occurrence in the code must not exceed the digit's value itself to comply with banking policies. For example, in a valid code, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    
def validate(n):
    """
    Write a function that validates a banking service code where each digit represents a specific service limit, and the frequency of that digit's occurrence in the code must not exceed the digit's value itself to comply with banking policies. For example, in a valid code, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    """
def validate(n):
    """
    Write a function that validates a banking service code where each digit represents a specific service limit, and the frequency of that digit's occurrence in the code must not exceed the digit's value itself to comply with banking policies. For example, in a valid code, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    """
    for i in range(10):
        temp = n
        count = 0
        while temp:
            if temp % 10 == i:
                count += 1
            if count > i:
                return False
            temp //= 10
    return True