If you receive the below processing error, follow the troubleshooting steps in this article. 

Error message: 8032 The child SKU you have provided is already assigned to a parent SKU. A child SKU can only have one parent SKU assigned to it. Please delete your child SKU and recreate it with the intended parent SKU.

Upon receiving this error, delete all of the child skus and the affected parent SKU for this one family. Wait 15-30 minutes before submitting the parent and child skus again.