In your local machine, create a containers.json file with the following contents. 
[  {    "Description": "Entrust PKIaaS Virtual Machine AMI file",    "Format": "ova",    "UserBucket": {      "S3Bucket": "$AWS_S3_BUCKET",      "S3Key": "$OVA_FILE"    }  }]In the file contents, replace:
- $AWS_S3_BUCKETwith the name of the S3 bucket described in Creating an S3 bucket for the PKIaaS Virtual Machine.
- $OVA_FILEwith the name of the OVA file selected when Uploading the OVA file of the PKIaaS Virtual Machine to AWS.
For example:
[  {    "Description": "Entrust PKIaaS Virtual Machine AMI file",    "Format": "ova",    "UserBucket": {        "S3Bucket": "pkiaas-vm",        "S3Key": "pkiaas-vm-prod-us.ova"    }  }]