As we look to resolve the related issues of managing complex drill-through reports and problems of incorrect or missing information, it would be prudent to take into account several aspects related to filter context, relationships, and configuration of the drill-through process.
Verify Table Relationships: The next step entails looking at the tables that are part of the drill-through action and their relationships with one another. As with any other functionality in Power BI, drill-through performs a value filter on the other tables based on the logical relationships between them. Make sure that the key fields, which perform a drill-through action, are associated correctly and the relationships are set up appropriately (one-to-many or many-to-one). Avoid many-to-many relationships where applicable because these tend to mess up the filter context, leading to undesirable results. Further, ensure that the cross-filter direction is the direction you desire for data flow.
Check Filter Context and Page-Level Filters: Given filter context discrepancies in drill through on the results achieved, this can depend on how the calculated fields are used as well. Each drill-down should have filters applied either at the page level or on the slicers. Unfortunately, additional filters may affect the context; hence, accurate data or information may not be provided. Use the "View as" function in Power BI to check how filters are put in place during drilling down. Draw attention to other pages, which might not have erroneous filters but rather potential additions that could be carried through the pages by the slicers or visual that propels the drill through action. Last resort, we may employ the "Remove Filters" command for particular fields to prevent undesired consequences from occurring.
Streamline and Conduct More Testing Upon Completion: As it relates to drill-throughs that are more intricate than the usual ones, it is beneficial first to simplify the drill logic so as to ascertain that the data goes through as intended prior to the addition of more complex province drill features. Perform the testing of each drill-through for each filter and slicer combination that is present to search for any trends or repeating instances of missing data. Where users from the onset have always been experiencing issues of certain data being absent from drill-downs, it may be asked whether all necessary data fields are included within that particular level. In some cases, it is advisable to explain to the users how to execute a drill-through, as certain slicer options or filters on the main page may impact the results of the drill-through.
This will allow the provision of all necessary drill-throughs without the possibility of data distortion or absence on the user's part, enhancing the overall reporting experience of Power BI while controlling users' access to the.