Redux-form, Invalid prop 'value' of type 'number' supplied to 'TextInput', expected 'string'

Basically, in your props you are passing numerical value of value.You have to passed it in the form of string.You can edit your code like this:

<TextInput
  keyboardType="numeric"
  returnKeyType="go"
  maxLength={3}
  style={styles.inputStyle}
  value={`${value}`} //here
  onChangeText={onChange}
/>

This way should be cleaner:

<TextInput
  value={yourValue ? String(yourValue) : null}
  ...
/>