---
title: "Dynamic campaign API to add a record responds 400 Invalid customer provided, customer, is wrong or in DNC list"
slug: "dynamic-campaign-api-add-record-responds-400-invalid-customer"
updated: 2026-05-22T13:47:37Z
published: 2026-05-22T13:47:37Z
canonical: "help.8x8.com/dynamic-campaign-api-add-record-responds-400-invalid-customer"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Dynamic campaign API to add a record responds 400 Invalid customer provided, customer, is wrong or in DNC list

## Question

Why does the Dynamic campaign API to add a record to a campaign respond with a 400 status code and message Invalid customer provided, customer, is wrong or in DNC list when attempting to add a record to a campaign? Example Response body

```plaintext
[
  {
    "customer-id": "10000001",
    "http-status": "400",
    "message": "Invalid customer provided, customer, is wrong or in DNC list."
  }
]
```

## Applies To

- 8x8 Contact Centre
- Dynamic campaign API

## Answer

- This can be because the record's telephone number is on a Do Not Call list that the campaign is configured to check.
  - For example, in Configuration Manager, Campaigns, Search/Filter, the Check Do Not Call lists option is enabled, and the customer's telephone number is registered on the selected list.
- This can also occur if the Outbound Setup doesn't have a Voice field configured.
  - This can be found in Configuration Manager, Outbound Setup, CRM Objects.

## Additional Information

- The Check Do Not Call lists option can not be modified for a campaign once it has been started; a new campaign would need to be created.
- Check Do Not Call lists options:
  - UK - Telephone Preference Service (TPS)
  - UK - Corporate Telephone Preference Service (CTPS)
- The Telephone Preference Service has a page where you can check if a number is registered with them
  - [https://www.tpsonline.org.uk/register/am_i_registered](https://www.tpsonline.org.uk/register/am_i_registered)
- Outbound Setup Documentation
  - [Configure the dialer](/documentation/docs/content-configure-the-8x8-auto-dialer) > [Step 3: Configure the outbound setup](/documentation/docs/content-step-3-configure-the-outbound-setup) > Define CRM objects and add fields