User managed Data Store item error message

[MichaelJenkins]

When a user publishes a feature service referencign an enterprise GDB, a Data Store item must first be created in Portal.  (Note,. not the software named "data store" that is part of the AGE base deplyment)

What is the expected behavior when you clicm ont he "Layers" tab for a data store item?   Unless the items has been used for bulk publishing, I am seeing nothing listed there, but I do see an error message in a little pink box that says "The item you requested cannot be found. The item may have been deleted or you may have entered an incorrect URL.".      Looking behind the scenes at netork traffic, there is this corresponding error message:

"error": {
"code": 400,
"messageCode": "CONT_0001",
"message": "Item does not exist or is inaccessible.",
"details": []
}

Any ideas why this is happening or what it indicates?   I am an administrator and have permission to see all content.

[HannesBrandt]

Hey,

I encountered the same behavior after publishing an SDE file as a “Data Store” item in the portal.
The problem occurs when I assign the item to a new owner after publishing. The URL of the error message in the browser network tab then continues to reference the item with the old owner, which most likely causes the error.
If I assign the item back to the original owner, the error no longer occurs.

I am using an ArcGIS Enterprise Portal version 11.3.

EDIT: After I reassigned the item to the initial owner I have noticed that the error always occurs when I access the item with a different user than the owner. The current user and not the owner of the item is always used for internal access.

Kind regards,

Hannes