Issue Summary

The Copy to Sandbox functionality will fail if the uncompressed XML file size is over 20GB and customers need to contact support if they want to copy files over 20GB.
Source: Manage product sandboxes

Expected Results

Customers receive a pop up message asking them to contact Atlassian Support since their XML file size is over 20GB.

Actual Results

Customers can trigger a copy process from their end, the process times out with a generic error and the data is not copied to the Sandbox environment.

From our logs, we also see a generic error:

"status": "INCOMPLETE",
  "properties": {},
        "selections": [
            "JIRA_SITE_IXPORT",
            "SELECTIVE_GROUP_PRODUCT_PERMISSIONS",
            "USERS"
"statusMessage": "status code: 500, reason phrase: Internal Server Error
"progressPercentage": 49,
    "progressProperties": null,
                "operationKey": "jiraSiteIxport"