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<h1 class="topictitle1">Troubleshoot signature verification errors</h1>
<div><p>Use the following table to find information to help you troubleshoot
some of the more common problems that you may encounter when verifying digital
signatures on objects.</p>
<div class="section"> <div class="p">
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="47.474747474747474%" id="d0e22">Problem</th>
<th valign="top" width="52.52525252525253%" id="d0e24">Possible solution</th>
</tr>
</thead>
<tbody><tr><td valign="top" width="47.474747474747474%" headers="d0e22 ">Restore process fails for objects without signatures.</td>
<td valign="top" width="52.52525252525253%" headers="d0e24 ">If the lack of a signature is not a concern, check to
see if the <a href="../rzakz/rzakzqvfyobjrst.htm ">QVFYOBJRST</a> system
value is set to 5. A value of 5 specifies that unsigned objects cannot be
restored. Change the value to 3 and try the restore again. </td>
</tr>
<tr><td valign="top" width="47.474747474747474%" headers="d0e22 ">Restore process fails for objects with signatures.</td>
<td valign="top" width="52.52525252525253%" headers="d0e24 ">This may happen if the *SIGNATUREVERIFICATION certificate
store was transferred to the system and DCM was not used to change the password
for it. In such a case, the certificates that the store contains cannot be
used to verify the signatures on objects during the restore process. Use DCM
to change the password for the certificate store. If you do not know the password,
you will need to delete the certificate store; recreate it and use DCM to
change the password.</td>
</tr>
<tr><td valign="top" width="47.474747474747474%" headers="d0e22 ">When restoring or installing a product, you get an error
because a signature failed to verify.</td>
<td valign="top" width="52.52525252525253%" headers="d0e24 ">When an object signature fails to verify correctly,
the failure may indicate that the object has been changed since it was signed.
If object integrity is the issue, do not change the QVFYOBJRST system value
or perform other actions that might allow the questionable object to restore.
Doing so can circumvent the security that signature verification provides
and allow a harmful object onto your system. Instead, you need to contact
the object signer to determine the appropriate action to take to resolve the
problem. </td>
</tr>
</tbody>
</table>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalzobjectsintrouble.htm" title="Use this information to learn about commands and system values that you can use to work with signed objects and how signed objects affect backup and recovery processes.">Troubleshooting signed objects</a></div>
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