Amazon error 8045: The SKU is a parent in one marketplace and a child in another
What does it mean?
Parentage must be the same everywhere. An empty parentage counts as child.
How to fix it
Use the same parentage in every marketplace.
Where do you fix it?
- In your product data (your source)
- 8016Not enough data to create the variation relationship
- 8007The parent SKU is not recognised
- 8008The child SKU is not recognised
- 8032The child is already assigned to another parent
- 8801Another child in the family has the same variation values
- 8802The relationship cannot be created
- 8804The family is inconsistent
- 8805An update would make the SKU inconsistent with its family
Source
Summarised in our own words; Amazon's page is leading.