3.1.5 Message Processing Events and Sequencing Rules

The administrative tool plug-in MUST write all the files to SYSVOL, as specified in [MS-GPOL], using remote file access. If a copy fails, the administrative tool plug-in MUST display to the user that the policy update has failed. After every creation, modification, or deletion that affects a GPIE file on SYSVOL, the administrative tool MUST invoke the Group Policy Extension Update task ([MS-GPOL] section 3.3.4.4, Group Policy Extension Update).