Error: 'Transfer failed due to an error. Please try again" when migrating data to Log Management 9.1

Products

• VCF Operations

Issue/Introduction

• Log Data Transfer from VCF Logs 9.0 to Log Management 9.1 fails with the below error:

Transfer failed due to an error. Please try again

• The api.log located at /storage/vcops/logs in VCF Operations show the below error: 

2026-06-08T09:24:59.979Z WARN api 33788 [ops@4413 threadId="160" threadName="ajp-nio-127.0.0.1-8010-exec-6" operationId="xyxyxyxyxyxyxyxyxyxyx"] [common.utils.MessageBundleHelper.renderTemplate] - Missing template [500 Internal Server Error on POST request for "https:/example.com:9543/api/v2
/data-migrations": "{"errorMessage":"Permission denied, please try again.\n","errorCode":"INTERNAL_SERVER_ERROR","errorDetails":null}"]
java.lang.IllegalArgumentException: can't parse argument number: "errorMessage":"Permission denied
        at java.base/java.text.MessageFormat.makeFormat(Unknown Source)

Environment

• VCF Operations 9.1
• Log Management 9.1

Cause

Log Data Transfer is failing because the 9.1 Log Management component can't SSH into the one of the node of the 9.0.2 cluster — the root credentials it's using are being rejected (Permission denied), so the migration never starts.

Resolution

All source nodes of the VCF Operations for Logs (9.0.x version) instance must have the same SSH credentials as each other, and be reachable via port 22 from the Log Management (9.1) nodes, otherwise the migration is unsuccessful. Please see: Log Data Transfer

In case a password reset is required, follow instructions for How to reset the root password in VCF Operations for Logs / VMware Aria Operations for Logs