Error message for asset linking

[Antonia]

When I want to create a ticket, I want to link an asset. To do this, I have configured a field called “Asset”. But now I can't select all assets and I get the following error message, see picture. In English: “No objects could be retrieved for this field. Remove attributes that no longer exist from the configuration filter for custom asset fields and ensure that the AQL query is valid.” What is meant by configuration filter? Where do I have to go to fix this error message? 

[Antonia]

SOLUTION

Issue > Custom Fields > [Field] > Contexts and default values > Edit configuration of the assets object field > Search for these attributes in the user-defined field and display them --> Only Label