Hi there, I've faced this issue with `terraform` on multiple occasions with different resources. On renaming or tainting a resource terraform does not wait for the resource to be destroyed completely before attempting to create it. (the output for this is shown under `debug output`) The same if you want to rename a resource (AWS ALB). Then when we run `terraform apply` again. Everything works as expected becuase now the resource destruction is complete. Also when a user is tainted and marked for recreation, `terraform apply` has to be re-run to apply the group memberships again, or else the user will have no groups. I feel these issues are somewhat inter-related. In the case below I renamed the group module and and modularized the `aws_iam_user` resource, henceforth triggering a recreate. ### Terraform Version ``` terraform -v Terraform v0.12.23 ``` ### Debug Output ```code aws_iam_user_group_membership.memberships["testuser"]: Destroying... [id=terraform-20200413153132068600000001] module.pm_group_policy.aws_iam_group_policy.policy: Destroying... [id=test:test_access_policy] > module.group.aws_iam_group.group: Creating... <----- THIS GROUP module.group_memberships.aws_iam_user_group_membership.memberships["testuser"]: Creating... >> module.users.aws_iam_user.users["testuser"]: Creating... <-------THIS USER module.pm_group_policy.aws_iam_group_policy.policy: Destruction complete after 1s > module.pm_group.aws_iam_group.group: Destroying... [id=test] <------- THIS GROUP module.pm_group.aws_iam_group.group: Destruction complete after 0s aws_iam_user_group_membership.memberships["testuser"]: Destruction complete after 2s >> aws_iam_user.users["testuser"]: Destroying... [id=testuser] <-------THIS USER module.group_memberships.aws_iam_user_group_membership.memberships["testuser"]: Creation complete after 2s [id=terraform-20200418123826515600000001] aws_iam_user.users["testuser"]: Destruction complete after 4s Error: Error creating IAM Group test: EntityAlreadyExists: Group with name test already exists. status code: 409, request id: 721c37c7-faeb-48af-b0bf-71361d82849f on ../modules/groups/main.tf line 1, in resource "aws_iam_group" "group": 1: resource "aws_iam_group" "group" { Error: Error creating IAM User testuser: EntityAlreadyExists: User with name testuser already exists. status code: 409, request id: 96597ff1-4e79-4d84-94ba-96a61de5e04a on ../modules/users/main.tf line 1, in resource "aws_iam_user" "users": 1: resource "aws_iam_user" "users" { ``` ### Expected Behavior - Maybe a make sure the resource to be recreated is destroyed first. ### Actual Behavior - Resources is created before destruction is complete. ### Steps to Reproduce - `taint` or rename a resource (IAM user) then `terraform apply`. ### Additional Context - If I set `parallelism` to 1 everytime then everything works accordingly