At least one valid postage service must be specified. ErrorCode: 21915469.

Complete error message: At least one valid postage service must be specified. ErrorCode: 21915469.

To sort this out, you should update the postage policy or edit it. Let’s try by updating it:

  1. Open your policy manager (eBay Business Policies direct link and click on “opt in”)
  2. Look for the policy you’ve picked on Nembol and update it by clicking on edit, and then on save (in this way you will update the postage info).
  3. Once done, make sure to select this same policy in your “list to eBay” settings on Nembol (like in the screenshot below)
  4. Remember to save.

If that doesn’t work, please consider editing or creating an additional shipping policy (even similar) to associate with Nembol.

At least one valid postage service must be specified. ErrorCode: 21915469