DemoAutocompleteValidation.vue

<script setup>
const items = [
  'foo',
  'bar',
  'fizz',
  'buzz',
]

const values = ref(['foo'])
const nameRules = [v => !!v.length || 'Select at least one option.']
</script>

<template>
  <VAutocomplete
    v-model="values"
    :items="items"
    :rules="nameRules"
    placeholder="Select Option"
    multiple
  />
</template>