Invalid Parent Unique ID/Parent SKU

This error occurred because at least one of the Parent Unique IDs/SKUs in your feed file does not exist on Wish.

This could have occurred for one of the following reasons:

• The item is not already on Wish. Have you uploaded these items to Wish yet? If you have not uploaded these items to Wish, you need to do that before you can edit or update them. Use the Add Products tool to add these items first.
  
  OR
  
  
• One or more Parent Unique IDs/SKUs was entered incorrectly. Double-check to make sure all Parent Unique IDs in your feed are entered correctly. Parent Unique IDs that are already in the Wish system are the only ones recognized by this tool, so the Parent Unique IDs in your feed file must match the Parent Unique IDs of the products you're updating on Wish.