Missing Permission to Inventory

Overview: 
University of Missouri System is trying to use Dematic EMS and they encountered a repeating message issue.

Per them, the message cycle started and repeated nonstop until they cut off the communication.

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Additional Information:

Error logs from edge-dematic and mod-remote-storage are shared in Slack due to sensitive information. One of the issues seemed to be a permission related issue - 
InventoryClient#markItemAsMissing(String): [Access for user 'stagingDirector' (7b870508-c248-473b-aace-59d978b06dc8) requires permission: inventory-storage.items.item.get]
 
We added the missing permission to the permission set that's assigned to the "StagingDirector" user but this is not documented on the readme - https://github.com/folio-org/mod-remote-storage or https://github.com/folio-org/edge-dematic
Looks like the code needs to be tweaked to add the missing permission/at least documentation needs to be updated to reflect the need for the missing permission to be assigned to StagingDirector user.

Versions of modules : edge-dematic-2.0.0, mod-remote-storage-2.0.3

Interested parties: