When a bundle task is created, you cannot continue by planning and preparing material information on the bundle task level. On bundle task, you will only be able to handle the already planned and prepared materials on the connected tasks.
To view information from the Return to Inventory assistant, the login user needs to have site-specific access, which can be granted using the Site per User page.
You can also view information about each part from the inventory register in IFS/Inventory.
When the required material is issued, a cost line will be created with transaction source Inventory and Cost Type Material on the connected work tasks.