The following are common causes and solutions for the failed deletion:
The default tags Key: AmazonFSx and Value: ManagedByAmazonFSx that are associated with your route tables are removed. If these tags aren't present, then recreate the tags. Then, delete the SVM.
You tried to delete an SVM that's part of an SVM peer or transition peer relationship. Delete each SVM peer relationship, and then delete the SVM.
You tried to delete an SVM that has a SnapMirror relationship. Delete the SnapMirror relationship, and then delete the SVM.
You tried to delete an SVM that has a logical interface (LIF) with Kerberos turned on. Turn off Kerberos on the LIF, and then delete the SVM.
When you join FSx for ONTAP SVMs to your AWS Directory Service for Microsoft Active Directory or self-managed Microsoft Active Directory, the SVMs create a computer object in your Active Directory. In some cases, you must manually unjoin an SVM from your Active Directory. Use the NetApp ONTAP CLI to unjoin the SVM.