In BES 4.1 there was an option to remotely wipe BlackBerry devices.

In BES 5 it exists to , but you need to dig little bit to find it.

It is located under:
BlackBerry solution management > User > Search for required user> Click the users PIN number> at the bottom of the page press on  “Delete all device data and disable device”

Select Options

Select Security Options

Select General Settings

Press the Menu key and then select Wipe Handheld

A warning pop-up window will appear. Press Continue
( Don’t mark “Include third party applications”
It will delete all application you installed and return device to factory defaults)

Enter the word Blackberry in the pop-up window that just appeared

• Wipe BB Device

• Go to Options
• Select Security Options.
• Select General Settings
• Click the Menu key
• Select Wipe Handheld
• Click Continue
• Type “blackberry”. All the data on the BlackBerry device is erased.

• In the Address Book, click the trackwheel/trackball and select Options.
• Click the trackwheel/trackball and select Change Option. Select YES for Wireless Synchronization.
• Click the trackwheel/trackball and select Save.

• Go to "Calendar"
• Go to "Options"
• Verify "Wireless Synchronization" set to "Yes"

Note: When activating new /wiped device messages are been synced with the following criteria
older than 7 days and not more than 350 messages are forwarded to the device.
This a default setting of the BlackBerry Server and can be modified on BES Server.

If enterprise activation fails on any step, please refer to the following articles:

I had this issue on one of our users, and the solution was to Delete BIS CICAL Service Book on BB device and resend Service Book from BES server.

To delete CICAL on BB device go to Settings–>Advanced Options –> Service Books
Locate BIS Cical and delete it.

Than go to your BlackBerry Enterprise server , right click on user and pres “Resend Service Book”

Restart your device and meeting accepts should start working.

To set Out of office vi Black Berry .

• Go to Messages
• Click the wheel and select Options
• Navigate to  Email Settings.
• Scroll down to Use Out Of Office Reply and change it to Yes.
• This will display a space under the line where you can compose your OOO message.

They are certain ways to clean BB memory and I’ll describe few of them here.

Method 1 is to delete unused languages ( frees the most amount of space, up to 13 mb)

• Scroll to and select the Settings icon.
• Select the Options icon.
• Select Advanced Options.
• Select Applications.
• Scroll to and highlight each of the unused languages under the Input Support and Language and Input Support subheadings.
• Press the Menu key.
• Select Delete.
• When prompted to Restart select No until all unused languages are deleted.
• Reset the BlackBerry Device.
• NOTE:The same task can be performed via BB instalation wizzard.
  

Method 2 is to delete sample video 2.2mb

• Scroll to and select the Settings icon.
• Select the Options icon.
• Select Advanced Options.
• Select Applications.
• Scroll to and highlight “Blackberry Sample Video”.
• Press the Menu key.
• Select Delete.
• When prompted to Restart select Yes.
• Reset the BlackBerry Device.

Method 3 is to reduce memory alocated to media

• Scroll to Media icon and select it.
• Navigate to  Pictures .
• Select the Device Memory.
• Press on Menu key, select Options.
• Change the Device Memory Limit to 12MB.
• Press the Menu key, and select Save.
• Reset the BlackBerry Device.

Method 4 is to reduce Calendar Appointments range to 60 days or less

• Scroll to calendar item and select it.
• Presson the Menu key, than select Options.
• Scroll to  Keep Appointments and select it.
• Select the desired amount of time to keep appointments – 30 for example.
• Press on the Menu key and select Save.
• Reset the BlackBerry Device.

Method 5 is to reduce the amount of time messages are kept on the BB device.

• Scroll to  Messages icon and select it.
• Press the Menu key, and select Options.
• Navigate to  General Options.
• Scroll  Keep Messages and select it.
• Select the desired amount of time to keep appointments.
• Press on the Menu key, and select Save.
• Reset the BlackBerry Device.

Method 6 is to BB Browser Clear Cache and Cookies

• Scroll to  Browser or Media Net icon and select it.
• Press the Menu key.
• Select Options.
• Select Cache Operations.
• Select Clear History.
• Reset the BlackBerry Device.

You may receive “HTTP Error 503: Service Unavailable” error when you are using Black Berry browser.

If your BlackBerry Mobile Data System (BlackBerry MDS) service is not enabled on your BlackBerry Enterprise Server or for your BlackBerry device user account.

Resolution 1

Enable MDS Service on you BES Server by completing the following steps:

1. Go to Server Configuration tab.
2. Expand Service Control & Customization.
3. Click BlackBerry MDS Connection Service.

Enable the BlackBerry Mobile Data System for the BlackBerry device user account by complete the following steps:

1. Click the User Configuration tab.
2. Select the BlackBerry device user account.
3. Expand Service Access and clickEnable Connection and Collaboration Services.

Resolution 2

1. On your BB device ,go to Options
2. Click Advanced Options.
3. Click Browser and select Internet Browser on first tow options (Default browser configuration and Default MDS browser configuration).
4. Display the menu and select Close.

To fix this problem: You need to reset “Desktop Sync Service book”

Go to Settings > Options > Advanced Options > Service Book
Select the Desktop [Sync] Service book from the menu, and select “Delete”
From the menu, select “Undelete” to restore the “Desktop [Sync]” service book
Settings > Options > Advanced Options > Enterprise Activation
From the menu, select “Activate” to re-try the wireless synchronization process
After Enterprise Activation process finishes check your settings for synchronization of your address book.

Address Book > Menu > Options
You will see that “Wireless Synchronization” has a “yes” value again (as it had disappeared before)

What is email reconciliation?

Email reconciliation is used to configure email deletion handling option of email accounts that are set in BB device.
For each mail account you can state whether you want the e-mail deleted on the handheld or the mailbox and handheld;
You can set the device the following ways:
Enable or disable wireless reconciliation and configure how conflicts are handled.

In order to set reconciling options on Black Berry Device go to:

Messages –> then select “Options”–> “Email Reconciliation”

Reconciliation options are:

Delete on: “Mailbox & handheld” – Means: When you delete message on Device or outlook message will be deleted.
Delete on: “Handled” – Means: When you delete message on Device, message won’t be deleted from mailbox.
Recommended settings setup:

1. From your home screen, go into your Messages folder.
2. Once in your messages, folder, bring up your menu
3. Scroll down to and choose “Options”.
4. Scroll down to and select “Email Reconciliation”.
5. In the “Email Reconciliation” menu, make sure “Delete On” is set to “Mailbox & Handheld”.
6. Confirm that Wireless Reconcile is set to “On”
7. Confirm that “On Conflicts” your “Mailbox Wins”
8. Save your changes.
9. Exit back out to your messages folder, and once again bring up the menu.
10. Scroll down to “Reconcile Now” to force reconciliation between your handheld and In-Box.
11. Your messages should now synchronize between your BlackBerry and In-Box.
Some general guidelines for Reconciliation

Most people thing that message deleted on outlook should disappear from BB device immediately and start panic. So don’t , be more patient . it takes approximately 20 minutes till messages are deleted from Handheld

1. If you delete an email from Outlook you need to leave it in the recycle bin otherwise the BES will lose track of the email and it won’t be deleted from the device. Don’t use (Shift+Delete) If you want to use shift+delete you need to activate Hard deletes reconciliation on BES 5 Server.
2.If you Outlook account is set up to transfer new emails to PST . They will never get to your BB device.
3. Remember! The deletes from Exchange to BlackBerry is not immediate. BES reconcile uses the 20/100 rule. That’s every 20 minutes or 100 changes whichever comes first. Alternatively, you can use the Reconsile Now function. Outlook in cached mode only does send and receive every 5 minutes (this also updates read, deleted & moved items), then the device will only do reconciliations every 15 minutes. To speed this process up just hit “Send & Receive” and then “Reconcile Now” on the device.

Testing:
Outlook to  BB takes up to 20 min. I find it useful to do this test:
Delete – BB
Delete – Outlook

Wait for them to deliver to both mailbox and BB.
Now delete – BB on Blackberry and watch outlook, it should take a min or two. And move to deleted in Outlook
If that works… It’s working as it should and you’re dealing with a user workflow issue. I find it helpful to turn off Empty delete folder on exit.

Calendar entries on BB device different from Outlook’s

You will need to re sync BB calendar: To do that
1. On the Blackberry device, go to Calendar
2. Press on Options button
3. Change Wireless Synchronization to No and save the option
4. Than Open Blackberry Desktop Manager run Backup and Restore.
5. Press on the advanced button, In the right hand window, find Calendar, select it and click on Clear.
6. Repeat steps 1-3 on step 3 instead disabling wireless synchronization set it to Yes

How to force calendar synchronization on BlackBerry/BES
One of the major features in BES sp6/ BlackBerry Enterprise Server for Microsoft Exchange – 4.1.6 is Calendar Synchronization Tool.
The blackberry calendar synchronization tool can be found on setup installation Media/Download under tools folder, the file name is TraitTool.exe
Before running TraitTool.exe please read the following documentation
Examples on how to run TraitTool.exe
Turning on the BlackBerry Calendar Synchronization Tool for all users
TraitTool -global -trait SmartSyncEnable -set true
Configuring the BlackBerry Calendar Synchronization Tool to run on weekdays for all users
TraitTool -global -trait SmartSyncSchedule -set Weekdays
Configuring the BlackBerry Calendar Synchronization Tool to check calendar entries 3 days in advance for all users
TraitTool -global -trait SmartSyncDays -set 3
Configuring the BlackBerry Calendar Synchronization Tool to run at 10:00 PM for all users on the messaging server SERVER01
TraitTool -server SERVER01 -trait SmartSyncTriggerHour -set 22
Configuring the BlackBerry Calendar Synchronization Tool to run at 11:00 PM for all users on the messaging server SERVER02
TraitTool -server SERVER02 -trait SmartSyncTriggerHour -set 23
Configuring the BlackBerry Calendar Synchronization Tool to correct calendar synchronization errors for a specific user
TraitTool -user scott_wyatt@test.rim.com -trait SmartSyncSendUpdate -set true

Wrong time on Blackberry Calendar Entries
This is most likely caused by either your Blackberry, your Computer or BES server is being set to the wrong time zone.

How to check your computers time zone:

Double Click on the Clock on your start bar.
Click on the Time Zone tab.
Verify that your time zone is set correctly.

On the Blackberry:

Select Options.
Select Data and Time.
Verify that your time zone is set correctly.
The problem also may be related to DST you will need to configure those settings or you BES server , Exchange server and local PC/Laptop.
Steps required on Microsoft Exchange: The guide
Steps Required on BES server: The guide

Additional Blackberry DST tools
DST Repair Tool

Fix Blackberry Duplicate Calendar Entries issue
1. Go to the calendar.
2. Click on one of the duplicate entries.
3. Press the menu button in order to open appointment details
4. Scroll down and there’s an option called recurrence, just change it to no recurrence