!!! Overview
[{$pagename}] is a [SupportedControl] which was defined by Microsoft stating that it "Allows an LDAP modify to work under less restrictive conditions. Without it, a delete will fail if an attribute done not exist, and an add will fail if an attribute already exists. No data is needed in this control."

The [Microsoft] defined permissive modify request control. The OID for this control is [1.2.840.113556.1.4.1413], and it does not have a value.

This control can only be used with LDAP [Modify Requests] and changes the behavior of the modify operation as follows:
* [Modify Request] [attempts to add|LDAP ModifyRequest Operations] an [Attribute Value] which already exists will be ignored and will not cause an [LDAP_TYPE_OR_VALUE_EXISTS] error result to be returned.
* [Modify Request] [attempts to delete|LDAP ModifyRequest Operations] an [Attribute Value] which does not exist will be ignored and will not cause an [LDAP_NO_SUCH_ATTRIBUTE] error result to be returned.

In other words, a [Modify Request] add modification ensures that the attribute contains the specified attribute value, and a delete modification ensures that the attribute does not contain the specified attribute value.

[{$pagename}] is passed with a a [Modify Request] with no value and there is no expected response from the [SupportedControl]
 
!! Other [LDAP Server Implementations] 
We have discovered that the following support this control:
* [EDirectory]
* [OpenDJ]
* [OpenDS]
* [UnboundID]
* [OpenLDAP]

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]