When deleting an RDS instance using AWS CLI, the following error is encountered:
An error occurred (InvalidParameterCombination) when calling the DeleteDBInstance operation: FinalDBSnapshotIdentifier cannot be specified when deleting a cluster instance.
How can you resolve it?

Answer options:

A.Deletion protection is enabled. Use aws rds modify-db-instance command with--no-deletion-protection flag.
B.In the CLI delete command, Specify the S3 bucket ARN where the final database snapshot must be stored.
C.There is not enough allocated storage for the final database snapshot.Use the aws rds modify-db-instance command to allocate additional storage for the snapshot.
D.A cluster-level snapshot wasn’t taken before deleting the database.Use the --skip-final-snapshot flag in the CLI delete command to skip the final snapshot.

Answer: D
Option A is incorrect because this error is not given when deletion protection is enabled.
Option B is incorrect because you do not specify S3 bucket ARN for the final snapshot.
Option C is incorrect because this error is not given if there is insufficient storage capacity.
Option D is CORRECT because the error warns that a cluster-level snapshot wasn’t taken before the delete command. One way to resolve the issue is to use the –skip-final-snapshot flag.
Reference:
https://aws.amazon.com/premiumsupport/knowledge-center/rds-error-delete-aurora-cluster/