# OH-Migrator-0002

## Description

When you encounter OH-Migrator-0002, then following error message will appear:

The following error occurred while executing this line: `<lines>`

OH-Migrator-0002: Upgradation failed.

For upgradation logs, please refer Migration.log file located at `<installation path\AppData\logs>`\
To restore the application to the previous state \[i.e. the state before upgradation], please restore the application folder and database backup that was taken before the upgrade started.

## Cause

This error occurs when the migration process fails to complete successfully.

## Solution

Following are the steps to recover from the failure, actual solution will be provided by <code class="expression">space.vars.SITENAME</code> support team.

**Send error details to** <code class="expression">space.vars.SITENAME</code> **Support**

These error details will be needed by support team to investigate the failure and provide solution.

1. Copy the data from <code class="expression">space.vars.SITENAME</code> installation folder to another location.
2. Share Migration.log file with <code class="expression">space.vars.SITENAME</code> support. This file will be located at `<installation_path>/logs` folder.

**Restore the application to earlier state**

Since the migration has failed, <code class="expression">space.vars.SITENAME</code> may not be in proper state to function. If you want to restore\
the previous state of the application till the solution is provided, follow the steps mentioned in section [How to Restore](/opstech-docs/manage/upgrade-index/taking-application-backup.md#how-to-restore).


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