Step 1: Login to your WooCommerce backend, and go to
WooCommerce > Settings > Advanced from the left side bar:
 
Step 2: Click “REST API”, and then click “Add Key
 
 
Step 3: Fill out the following fields -
Description: OneCart
User: Select the admin user
Permissions: Read/Write
 

Then click “Generate API key”
 
Step 4: You must save both the API Key and API Secret.
Email it to us at hello@lachmann-tech.com with the following info:
1. WooCommerce website URL
2. API Key
3. API Secret
 
Step 5: Next, click “Webhooks”, and then “Add Webhook
 
 
Step 6: You will be adding two webhooks.
Fill out the fields as follows:
1st Webhook: Order Processing
Name: OneCart Order Processing
Status: Active
Topic: Order created
Secret: <LEAVE BLANK>
API Version: WP REST API Integration v3
 
 
2nd Webhook: Order Update
Name: OneCart Order Update
Status: Active
Topic: Order updated
Secret: <LEAVE BLANK>
API Version: WP REST API Integration v3
 
Step 7: Finally, click “Legacy API” and make sure “Legacy API” is checked on:
You’re done! Email us to inform us all the steps are completed at hello@lachmann-tech.com!