Issue
Symptoms
The Requested Item state value not changing to "Closed Complete" even after the Catalog Tasks associated with the item is closed.
Release
All versions
Cause
In Out of the Box, there is a business rule called "task closer" with sys_id=475ef3c5c611228401440a7a5f29a786 which is responsible for changing the state to "Closed Complete". This was customized.
Resolution
Revert the business rule called "task closer" with sys_id=475ef3c5c611228401440a7a5f29a786 to Out of the Box version.