Article ID: 118429, created on Nov 4, 2013, last review on May 11, 2014

  • Applies to:
  • Operations Automation 5.3
  • Business Automation


After trying to update Exchange mailbox size via Customer Control Panel, the task for changing mailbox size fails:

Task name       Set limits for mailbox 'mailboxname' (id=12345)
Task description        Set limits for mailbox 'mailboxname' (id=12345)
Last execution output   Destination host_id #12 : Provisioning request failed. Unknown error 0x80131500 [<response><errorContext description="Unsupported size format" code="0x80131500" executeSeqNo="2"><errorSource namespace="Exchange2010ProviderEx" procedure="ModifyMailbox"/><errorSource namespace="SW Managed Exchange" procedure="ModifyMailbox"/></errorContext></response>]


Incorrect size of mailbox is set on Exchange server.


  1. Login to Exchange server where mailboxes are stored
  2. Open Exchange Management Shell and check quotas of the problem mailbox using the command:

    [PS] C:\Windows\system32>Get-Mailbox -Identity "Mailbox Owner" | fl ProhibitSendQuota, ProhibitSendReceiveQuota, IssueWarningQuota
  3. I the values that you see do not correspond to values specified in POA, then update them using the command:

    [PS] C:\Windows\system32>Set-Mailbox -Identity "Mailbox Owner" -ProhibitSendQuota <value> -ProhibitSendReceiveQuota <value> -IssueWarningQuota <value>
  4. Resubmit the failed task.

Search Words


Unsupported size format

Provisioning request failed

failed task

mailbox size

a8cdca46e4357a6e38fded820770e272 caea8340e2d186a540518d08602aa065 5356b422f65bdad1c3e9edca5d74a1ae 2554725ed606193dd9bbce21365bed4e 198398b282069eaf2d94a6af87dcb3ff e12cea1d47a3125d335d68e6d4e15e07

Email subscription for changes to this article
Save as PDF