mapi machine create Failed when there is a same name machine which is Terminated on AWS, but capi machine create succeed.
This looks an regression issue because I checked on a 4.16 cluster, no such issue.

    4.20.0-0.nightly-2025-08-28-071300

    always

    1.Create a standalone machine, the machine get Running, then delete it, when the machine disappeared in the cluster, I can see the machine still shows on AWS console, and it's Terminated state.

https://drive.google.com/file/d/1Ls-1ANdSsBrtWKrIdmOCfyPLg7kH1VQl/view?usp=sharing
 
    2.Create the machine again with authoritativeAPI: MachineAPI, the machine get Failed

liuhuali@Lius-MacBook-Pro huali-test % cat ms1.yaml 
apiVersion: machine.openshift.io/v1beta1
kind: Machine
metadata:
  name: machine-authoritativeapi-mapi-deletion
  namespace: openshift-machine-api
spec:
  authoritativeAPI: MachineAPI
  lifecycleHooks: {}
  metadata: {}
  providerSpec:
    value:
      ami:
        id: ami-082a55a580d5538ed
      apiVersion: machine.openshift.io/v1beta1
      blockDevices:
      - ebs:
          encrypted: true
          iops: 0
          kmsKey:
            arn: ""
          volumeSize: 120
          volumeType: gp3
      capacityReservationId: ""
      credentialsSecret:
        name: aws-cloud-credentials
      deviceIndex: 0
      iamInstanceProfile:
        id: huliu-aws829a-4nts6-worker-profile
      instanceType: m6i.xlarge
      kind: AWSMachineProviderConfig
      metadata:
        creationTimestamp: null
      metadataServiceOptions: {}
      placement:
        availabilityZone: us-east-2c
        region: us-east-2
      securityGroups:
      - filters:
        - name: tag:Name
          values:
          - huliu-aws829a-4nts6-node
      - filters:
        - name: tag:Name
          values:
          - huliu-aws829a-4nts6-lb
      subnet:
        filters:
        - name: tag:Name
          values:
          - huliu-aws829a-4nts6-subnet-private-us-east-2c
      tags:
      - name: kubernetes.io/cluster/huliu-aws829a-4nts6
        value: owned
      userDataSecret:
        name: worker-user-data
 liuhuali@Lius-MacBook-Pro huali-test % oc create -f ms1.yaml 
machine.machine.openshift.io/machine-authoritativeapi-mapi-deletion created
liuhuali@Lius-MacBook-Pro huali-test % oc get machine
NAME                                          PHASE     TYPE         REGION      ZONE         AGE
huliu-aws829a-4nts6-master-0                  Running   m6i.xlarge   us-east-2   us-east-2a   8h
huliu-aws829a-4nts6-master-1                  Running   m6i.xlarge   us-east-2   us-east-2b   8h
huliu-aws829a-4nts6-master-2                  Running   m6i.xlarge   us-east-2   us-east-2c   8h
huliu-aws829a-4nts6-worker-us-east-2a-8l9bq   Running   m6i.xlarge   us-east-2   us-east-2a   8h
huliu-aws829a-4nts6-worker-us-east-2b-25g82   Running   m6i.xlarge   us-east-2   us-east-2b   8h
huliu-aws829a-4nts6-worker-us-east-2c-mslbv   Running   m6i.xlarge   us-east-2   us-east-2c   8h
machine-authoritativeapi-mapi-deletion        Failed                                          3s
liuhuali@Lius-MacBook-Pro huali-test % oc get machine machine-authoritativeapi-mapi-deletion -oyaml
...
status:
  authoritativeAPI: MachineAPI
  conditions:
  - lastTransitionTime: "2025-08-29T10:32:55Z"
    status: "True"
    type: Drainable
  - lastTransitionTime: "2025-08-29T10:32:55Z"
    message: Instance has not been created
    reason: InstanceNotCreated
    severity: Warning
    status: "False"
    type: InstanceExists
  - lastTransitionTime: "2025-08-29T10:32:55Z"
    message: The AuthoritativeAPI status is set to 'MachineAPI'
    reason: AuthoritativeAPIMachineAPI
    severity: Info
    status: "False"
    type: Paused
  - lastTransitionTime: "2025-08-29T10:32:55Z"
    message: Successfully synchronized MAPI Machine to CAPI
    reason: ResourceSynchronized
    severity: ""
    status: "True"
    type: Synchronized
  - lastTransitionTime: "2025-08-29T10:32:55Z"
    status: "True"
    type: Terminable
  errorMessage: Instance i-0174576be2b6e6d65 is in a terminated state
  errorReason: InvalidConfiguration
  lastUpdated: "2025-08-29T10:32:55Z"
  phase: Failed
  providerStatus: {}
  synchronizedGeneration: 1

3. Change authoritativeAPI from MachineAPI to ClusterAPI, then create the machine, the machine get Running

liuhuali@Lius-MacBook-Pro huali-test % oc create -f ms1.yaml 
machine.machine.openshift.io/machine-authoritativeapi-mapi-deletion created
liuhuali@Lius-MacBook-Pro huali-test % oc get machine.c -n openshift-cluster-api
NAME                                          CLUSTER               NODENAME                                    PROVIDERID                              PHASE     AGE     VERSION
huliu-aws829a-4nts6-worker-us-east-2a-8l9bq   huliu-aws829a-4nts6                                               aws:///us-east-2a/i-06c0824941b32602b             8h      
huliu-aws829a-4nts6-worker-us-east-2b-25g82   huliu-aws829a-4nts6                                               aws:///us-east-2b/i-08533980068d569e3             8h      
huliu-aws829a-4nts6-worker-us-east-2c-mslbv   huliu-aws829a-4nts6                                               aws:///us-east-2c/i-045593364841450db             8h      
machine-authoritativeapi-mapi-deletion        huliu-aws829a-4nts6   ip-10-0-82-147.us-east-2.compute.internal   aws:///us-east-2c/i-0faf56c83f59655e3   Running   6m53s   

https://drive.google.com/file/d/1ZGmRxZHcjGDU84MYGGryqVerJYt6v1w5/view?usp=sharing

    mapi machine create Failed when there is a same name machine which is Terminated on AWS

    mapi machine should create succeed when there is a same name machine which is Terminated on AWS