Getting 10002 error – Security header is not valid message.

Last Updated: January 14, 2024

This error commonly arises if you have entered the wrong values in the API keys field under plugin settings.
Kindly check and verify the keys. You can get the keys under the same names from your PayPal account.

  • Log into your PayPal business account.
  • Click Activity from the top of the page and select API Access
  • Scroll down to NVP/SOAP API Integration (Classic) and click Manage API Credentials.
  • Create keys if not already. Else, copy the following credentials:
    • API Username
    • API Password
    • Signature​
  • Next, paste the credentials into corresponding fields under the PayPal plugin settings.
Setup Guide
Can’t find what you need?

Browse our Documentation or contact Support to get your questions answered.

Help Desk