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# List object versions
Gets a list of all versions of objects in the selected bucket
`Function ListObjectVersions(Val Bucket, Val BasicData, Val Prefix = "", Val Version = "", Val Headers = Undefined) Export`
| Parameter | CLI option | Type | Required | Description |
|-|-|-|-|-|
| Bucket | --bucket | String | ✔ | Bucket name |
| BasicData | --basic | Structure of KeyAndValue | ✔ | Basic request data. See GetBasicDataStructure |
| Prefix | --prefix | String | ✖ | Filtering by prefix, if necessary |
| Version | --ver | String | ✖ | Version ID for the beginning of the list |
| Headers | --headers | Map Of KeyAndValue | ✖ | Additional request headers, if necessary |
Returns: Structure of KeyAndValue - serialized JSON response from storage
:::tip
Method at AWS documentation: [ListObjectVersions](https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListObjectVersions.html)
:::
```bsl title="1C:Enterprise/OneScript code example"
URL = "storage-155.s3hoster.by";
AccessKey = "BRN5RKJE67...";
SecretKey = "NNhv+i9PrytpT8Tu0C1N...";
Region = "BTC";
BasicData = OPI_S3.GetBasicDataStructure(URL, AccessKey, SecretKey, Region);
Bucket = "opi-gpbucket3";
Prefix = "pic";
Result = OPI_S3.ListObjectVersions(Bucket, BasicData, Prefix);
```