Error: Please enter a valid ZIP Code

The direct explanation of the error content is:
The zip code set in the datasheet or business profile is invalid, please enter a valid zip code.

Solution:
1. First check whether the datasheet or business profile has filled in the zip code. Since the zip code is not a required item, you can directly delete this content;
2. If you want to keep the Item Postal Code content, please enter the zip code corresponding to "Item Country > Item Location". The zip code must be true and valid.