Can we attach a attachments for sales order

Summary:

Hi team,Can we add attachments for sales order?

We are able to attach using REST API but unable to see attachments in UI using below payload.

{

  "DatatypeCode": "FILE",

  "FileName": "my SR.txt",

  "CategoryName": "MISC",

  "FileContents":

  "bXkgc3IncyANClNSIDMtMzMxOTU2MjcyMDEgOiBPcmFjbGUgRmllbGQgU2VydmljZSBXb3JrIE9yZGVyIG5vdCBnZXR0aW5nIGNyZWF0ZWQNClNSIDMtMzMxMDA5MzcyMzEgLCBTUiAzLTMzMjEzMzg1ODkxIDogcHJvZm9ybWENClNSIDMtMzI1NDEyOTY0ODEgLSByZXR1cm4gdG8gc2VydmljZQ0KU1IgMy0zMjc1ODMwMTkyMSAtIGRhdGUgcGlja2VyIE9EQQ0KU1IgMy0zMjYzMzM2ODk4MSAtIFNSIFNsb3duZXNzDQpTUiAzLTMzMzM5ODQ2MTMxIC0gT0VDLSBPRlMgZXJyb3IgDQpTUiAzLTMzMTAwOTM3MjMxIC0gY3BxIHNpdGUgcmVzdGFydCBwcm9kDQoNCg0KDQo9JyfCoMKgwqDCoMKgwqDCoMKgDQoNCg==",

  "UploadedFileContentType": "text/plain",

  "ContentRepositoryFileShared": "false",

  "Title": "my SR.txt"

}

Where can we see the above laoded api attachment.

We are unable to view the same also