To start a replication task

The following command-name example lists the available widgets in your AWS account.

aws dms start-replication-task \
    --replication-task-arn arn:aws:dms:us-east-1:123456789012:task:K55IUCGBASJS5VHZJIINA45FII \
    --start-replication-task-type reload-target

Output:

{
    "ReplicationTask": {
        "ReplicationTaskIdentifier": "moveit2",
        "SourceEndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:6GGI6YPWWGAYUVLKIB732KEVWA",
        "TargetEndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:EOM4SFKCZEYHZBFGAGZT3QEC5U",
        "ReplicationInstanceArn": "arn:aws:dms:us-east-1:123456789012:rep:T3OM7OUB5NM2LCVZF7JPGJRNUE",
        "MigrationType": "full-load",
        "TableMappings": ...output omitted... ,
        "ReplicationTaskSettings": ...output omitted... ,
        "Status": "starting",
        "ReplicationTaskCreationDate": 1590524772.505,
        "ReplicationTaskStartDate": 1590619805.212,
        "ReplicationTaskArn": "arn:aws:dms:us-east-1:123456789012:task:K55IUCGBASJS5VHZJIINA45FII"
    }
}

For more information, see Working with AWS DMS Tasks in the AWS Database Migration Service User Guide.