Symptoms
Mailbox is migrating from Exchange 2010 to 2013 version. Migrate Address List to Exchange 2013 (organization #1234, subscription #1234) task fails:
Last execution output
Provisioning request failed. Call of method "SW Managed Exchange::UpgradeAL" failed.
...
Inner exception(s):
------------------
Cannot bind argument to parameter 'path' because it is an empty string.
Error position: At C:\Program Files\Parallels\Windows Provisioning Engine\Providers\SW Managed Exchange\UpgradeAL.ps1:32 char:23
+ UpdateListPermissions $alDN $prefDC
Cause
Address List exists on the Exchange side but with no OWKO record.
May be a consequence of some manual modification.
Resolution
Add OWKO record for the Address List as described in How to edit OWKO of AD object: add/remove data by MPS or WPE call KB article.
Template for OWKO AD object looks like:
<pre><code>-value>B:3X:9E444526CXXX4D5C9A59C9A84E26BXXX:CN=S001000XXX AL,CN=All Address Lists,CN=Address Lists Container,CN=HostedExchange,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=hosting,DC=local</value></code></pre>
Then restart the failed task.