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The form or workflow routing can then use {Employee} rather than the control that may be mixed case.

Admin Search for a task locked by a user does not show all LDAP users

Although the user list from the LDAP appears correct, the user does not appear in the admin search for a task locked by a user.

1.  Verify that your LDAP configuration  is correct.
   
2. Check if the MaxPageSize property is set in Active Directory.  Look for "MaxPageSize" on this Microsoft Support Page for reference.

Active Directory Sample Configuration

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