The parent SKU in your variation hierarchy doesn't conform to Amazon's expectations — wrong format, references a non-existent SKU, or has invalid data.
Why this happens
Variation feeds where the parent SKU was renamed, deleted, or never existed in the catalog.
How to fix it
Confirm the parent SKU exists in your inventory.
Match parent_sku exactly (case-sensitive) across parent and child rows.
Parent SKUs use parent_child='parent' and have no quantity or price.
Resubmit.
Common pitfalls
Case mismatches between parent and child references
