PayPal: 11451 Billing Agreement Or Transaction Id Invalid

What This Means

The billing agreement for the customer's PayPal is invalid.

Common Causes For This Error

  • The field is empty
  • It contains an invalid transaction
  • It isn't associated with a billing agreement
  • It can't be decrypted

Suggested Next Steps

  1. From PayPal: Check that the billing agreement ID is correct. If it is, inform the customer that a new billing agreement is needed and offer them the chance to sign up for a new billing agreement through Express Checkout.

    • In most cases, the easiest way to allow a Customer to create a new billing agreement with PayPal Express Checkout is to create a new Scheduled Order by completing a checkout with your connected online store. The customer can then delete their previous Scheduled Order or add the new PayPal payment method to their existing Scheduled Order(s).
  2. If the Customer did not intend to cancel their billing agreement, then you can also ask the Customer to contact PayPal Customer Service for help with their PayPal account.

  3. If your site offers another payment option than PayPal, you can contact the customer to have them add a new payment method and add it to their Scheduled Order.

After Resolving The Issue

Once this issue is resolved, you should use the action to Restart Processing the Failed Scheduled Order.