> Source: [sk184946](https://support.checkpoint.com/results/sk/sk184946)

# sk184946 - Multi-Domain Security Management Advanced Upgrade import fails with the "HV000028" error

| Property | Value |
|----------|-------|
| Solution ID | sk184946 |
| Date Created | 2026-05-11 |
| Last Modified | 2026-10-13 |
| Technical Level | General |
| Products | Multi-Domain Security Management Server |
| Versions | R82.10, R81.20, R82 |
| OS | Gaia |
| Platform | Open Server |

## Symptoms

- * Advanced Upgrade of Multi-Domain Security Management (MDSM) fails during the import phase from the source Server to a target Server.
* The Advanced Upgrade wizard (or command-line import) reports a generic validation error similar to "*HV000028: Unexpected exception during isValid call*". The failure prevents completion of the overall Multi-Domain Security Management migration.

## Cause

During the Advanced Upgrade import, the validation logic incorrectly fails when processing specific objects in the affected Domain, triggering the reported exception and aborting the import process.

## Solution

This problem was fixed. The fix is included in:

* [Jumbo Hotfix Accumulator for R82.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82.10/Default.htm) starting from Take 50
* [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 130

If you choose not to upgrade, Check Point can supply a **Hotfix** . [Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.  
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.  
For faster resolution and verification, please collect [CPinfo files](http://supportcontent.checkpoint.com/solutions?id=sk92739) from the Security Management Server and Security Gateways involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).

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