---
title: "Why does my vendor integration say credentials are not recognized?"
slug: "why-does-my-vendor-integration-say-credentials-are-not-recognized"
updated: 2026-10-15T01:15:34Z
published: 2026-10-15T01:15:34Z
canonical: "help.servicetitan.com/why-does-my-vendor-integration-say-credentials-are-not-recognized"
---

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

# Why does my vendor integration say credentials are not recognized?

## Problem

When setting up a supplier integration, you see an error in the *Verify Account Number* step if the vendor doesn't recognize your account credentials.

## Solution

Check your *Account Number* and *Postal Code* with your vendor. Then, try setting up your vendor integration again.

### Set up your account for the Full Procurement Integration

After your credentials are confirmed with the supplier, set up the integration.

1. Go to the top toolbar and click **Settings**![A simple icon representing a settings gear. ](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/icon-gnav-settings-inactive.png?sv=2026-02-06&spr=https&st=2026-10-31T02%3A37%3A34Z&se=2026-10-31T03%3A37%3A34Z&sr=c&sp=r&sig=esO4K%2B76dT1yM%2BmWRgqE08dvIYW9TlCvjnk%2B6LqiVVQ%3D) .
2. In the side panel, click **Vendor Integrations > Full Procurement**. ![User interface showing vendor integrations with highlighted 'Full Procurement' option.](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/why-does-my-vendor-integration-say-credentials-are-not-recognized-image-x9v8v3v1.png?sv=2026-02-06&spr=https&st=2026-10-31T02%3A37%3A34Z&se=2026-10-31T03%3A37%3A34Z&sr=c&sp=r&sig=esO4K%2B76dT1yM%2BmWRgqE08dvIYW9TlCvjnk%2B6LqiVVQ%3D)
3. Select the vendor you want to integrate with.
4. Follow the steps on the *Integration Setup* screen that opens. For more, see [Integration Setup](/construction/docs/set-up-your-account-for-the-full-procurement-integration-1#integration-setup).

The process of how ServiceTitan connects directly to the supplier and validates user accounts.

[Learn more →](https://help.servicetitan.com/docs/procure-to-pay-p2p-glossary) · [See the full glossary →](https://help.servicetitan.com/docs/glossary-overview)