Topic
The Remove Value from Collection action removes a value from every index where it is found. The index's do not become blank. They are removed and all index's move down one position.
The action can be used to remove erroneous data in your collection before processing.
Please see the Nintex Help files for more information:
https://help.nintex.com/en-US/nwc/Content/Designer/Actions/Collection-RemoveItem.htm