When you apply an attribute to an element, the name of the attribute displays in the template content editor:
Some data sources permit the creation of custom attributes that you can use in the report design. If the report uses a custom attribute that is specific to a repository or project, the report runs as designed (extracting all of the data) only with a data source that has the custom attribute defined. Running on data sources that do not have the custom attributes results in undefined behavior (incomplete results, incorrect results etc).
To resolve the issue, you can modify your data selection to include data that uses that attribute, or you can remove the data attribute from your template. To change the text that displays from <data attribute not found>, you can customize it by changing the missing data text property value in your document specification. For more information on the missing data text property and other metadata properties, see Runtime metadata properties reference.
You can search for a list of variable assignments, attributes, and queries used in an element by right-clicking an element and selecting . The Search view opens and a list displays. You can double-click an item in the results to edit it.
You can locate a query or attribute in the Data Source Schemas view from the element it is applied to by right-clicking an element and selecting . The Data Source Schema view opens and the query or attribute is highlighted.