MediaWiki:Apihelp-block-param-reblock
From MoodleDocs
If the user is already blocked, overwrite the existing block.
Note: You are currently viewing documentation for Moodle 3.1. Up-to-date documentation for the latest stable version of Moodle is probably available here: Apihelp-block-param-reblock.
If the user is already blocked, overwrite the existing block.