Customer group discount when create order from admin panel does not take effect

I've recently installed OpenCart 3.0.2.0
When I tried to create order from admin panel, any discount rules added in product section does not take effect:


But if I order from storefront, it does work:


Any idea? It works on OpenCart 2.x
Thanks in advance!

More information is needed based on extensions or discounts being used from the core. Step-by-step procedures required in order to reproduce the issue (especially if addressing the issue as part of the core).

Just login as the customer you want (can be done from the admin area) and place the order on the front-end.

I am having exactly the same issue with the same OC version.
Of course an easy work around is placing the order from the store front, but this is not a solution.
If somebody has a fix for this please provide this or indicate how we can submit a bug report.
thank you,

I think the issue may have been reported here.
https://github.com/opencart/opencart/issues/7124

I think we have found the problem what is happening is in admin settings if the display setting for showing customer group registration is unticked this issue happens, see attached.

Not sure why in recent versions this is the case as this check box is only supposed to not display the customer group on registration and shouldn't have any interference with customer group pricing. However once ticked customer group pricing is restored to admin

Does anyone have a fix for this problem as this is an issue if we need to offer better customer groups for certain customers and not want other customers to see that they're not on the best customer group prices?

Have you tried this change?
https://github.com/opencart/opencart/pull/6855/files

This worked
Thanks ADD Creative for the link

Go to
catalog/controller/api/customer.php

Replace all with

<?php
class ControllerApiCustomer extends Controller {
public function index() {
$this->load->language('api/customer');
// Delete past customer in case there is an error
unset($this->session->data['customer']);
$json = array();
if (!isset($this->session->data['api_id'])) {
$json['error']['warning'] = $this->language->get('error_permission');
} else {
// Add keys for missing post vars
$keys = array(
'customer_id',
'customer_group_id',
'firstname',
'lastname',
'email',
'telephone',
);
foreach ($keys as $key) {
if (!isset($this->request->post[$key])) {
$this->request->post[$key] = '';
}
}
// Customer
if ($this->request->post['customer_id']) {
$this->load->model('account/customer');
$customer_info = $this->model_account_customer->getCustomer($this->request->post['customer_id']);
if (!$customer_info || !$this->customer->login($customer_info['email'], '', true)) {
$json['error']['warning'] = $this->language->get('error_customer');
}
}
if ((utf8_strlen(trim($this->request->post['firstname'])) < 1) || (utf8_strlen(trim($this->request->post['firstname'])) > 32)) {
$json['error']['firstname'] = $this->language->get('error_firstname');
}
if ((utf8_strlen(trim($this->request->post['lastname'])) < 1) || (utf8_strlen(trim($this->request->post['lastname'])) > 32)) {
$json['error']['lastname'] = $this->language->get('error_lastname');
}
if ((utf8_strlen($this->request->post['email']) > 96) || (!filter_var($this->request->post['email'], FILTER_VALIDATE_EMAIL))) {
$json['error']['email'] = $this->language->get('error_email');
}
if ((utf8_strlen($this->request->post['telephone']) < 3) || (utf8_strlen($this->request->post['telephone']) > 32)) {
$json['error']['telephone'] = $this->language->get('error_telephone');
}
// Customer Group
if (is_array($this->config->get('config_customer_group_display')) && in_array($this->request->post['customer_group_id'], $this->config->get('config_customer_group_display'))) {
if (!empty($this->request->post['customer_group_id'])) {
$customer_group_id = $this->request->post['customer_group_id'];
} else {
$customer_group_id = $this->config->get('config_customer_group_id');
}
// Custom field validation
$this->load->model('account/custom_field');
$custom_fields = $this->model_account_custom_field->getCustomFields($customer_group_id);
foreach ($custom_fields as $custom_field) {
if ($custom_field['location'] == 'account') {
if ($custom_field['required'] && empty($this->request->post['custom_field'][$custom_field['custom_field_id']])) {
$json['error']['custom_field' . $custom_field['custom_field_id']] = sprintf($this->language->get('error_custom_field'), $custom_field['name']);
} elseif (($custom_field['type'] == 'text') && !empty($custom_field['validation']) && filter_var($this->request->post['custom_field'][$custom_field['custom_field_id']], FILTER_VALIDATE_REGEXP, array('options' => array('regexp' => '/' . html_entity_decode($custom_field['validation'], ENT_QUOTES, 'UTF-8') . '/')))) {
$json['error']['custom_field' . $custom_field['custom_field_id']] = sprintf($this->language->get('error_custom_field'), $custom_field['name']);
}
}
}
if (!$json) {
$this->session->data['customer'] = array(
'customer_id' => $this->request->post['customer_id'],
'customer_group_id' => $customer_group_id,
'firstname' => $this->request->post['firstname'],
'lastname' => $this->request->post['lastname'],
'email' => $this->request->post['email'],
'telephone' => $this->request->post['telephone'],
'custom_field' => isset($this->request->post['custom_field']) ? $this->request->post['custom_field'] : array()
);
$json['success'] = $this->language->get('text_success');
}
}
$this->response->addHeader('Content-Type: application/json');
$this->response->setOutput(json_encode($json));
}
}
}

Worked for me on Version 3.0.3.1