• John Huebner

• June 14, 2022 at 9:58 am

Because you have a repeater inside of a repeater. A group field is a repeater that always has a single row. You cannot refer to the repeater with the name “group_main_info_phones” to update the field.

Like I said, you need to use field keys

$value = array(
  // field_XXXXXXX is the field key of your nested repeater
  // it's value is an array of rows for the repeater
  'field_XXXXXXX' => array(
    // each row of the repeater is a nested array
    // that holds field key => value pairs
    array(
      // field_YYYYYYY is the field key of "name" field
      'field_YYYYYYY' => 'Jon',
      // field_ZZZZZZZ  is the field key of "phone" field
      'field_YYYYYYY' => '0897654007'
    )
  )
);
// field_AAAAAAA is the field key of the group field 
update_field('field_AAAAAAA', $value, $the_record_id);