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Version: 1.x

API02006: API Key Invalid

What This Means​

The WooCommerce REST API key being used is invalid. API keys are used for server-to-server authentication, and the key provided doesn't match any valid key in WooCommerce.

Common Causes​

  • Key deleted — The API key was removed from WooCommerce
  • Key typo — The key was entered incorrectly
  • Wrong key pair — Consumer key and secret don't match
  • Key from different site — Using keys generated for another installation

How to Fix​

1. Verify the API Key​

In WordPress Admin → WooCommerce → Settings → Advanced → REST API:

  1. Check if your API key exists
  2. Verify it hasn't been revoked
  3. Note the permissions (read/write/read-write)

2. Generate New API Keys​

If the key is missing or invalid:

  1. Go to WooCommerce → Settings → Advanced → REST API
  2. Click "Add key"
  3. Enter a description (e.g., "WCPOS")
  4. Select the user
  5. Choose "Read/Write" permissions
  6. Click "Generate API key"
  7. Copy both the Consumer Key and Consumer Secret (shown only once!)

3. Update POS Configuration​

Enter the new API keys in the POS:

  • Consumer Key (starts with ck_)
  • Consumer Secret (starts with cs_)

4. Check Key Permissions​

Ensure the key has sufficient permissions:

  • Read — View data only
  • Write — Modify data only
  • Read/Write — Full access (recommended for POS)