A summary report with a cross-filter is a type of report that allows you to summarize data by grouping rows and columns and applying filters based on related objects and fields. A cross-filter is a filter that lets you include or exclude records in your report based on related objects and their fields. In this case, you can create a summary report that includes a cross-filter to the Account object with a sub-filter for credit card number equal to null. This will show you all B2C accounts that are missing the credit card number, regardless of whether it is encrypted or not. Reference: https://help.salesforce.com/s/articleView?id=sf.reports_summary_charts.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.reports_cross_filters.htm&type=5

Flows deployed with change sets are inactive by default and need to be manually activated in the destination org before they can run. Deploying or redeploying a flow with change sets creates a new version of the flow in the destination org, which preserves the previous versions and allows for rollback if needed. All flow dependencies, such as custom fields, objects, or variables, are automatically added to the change set when a flow is added

Knowledge is a feature that allows administrators to create, manage, and share articles that provide information and solutions for common issues or questions. Knowledge articles can be searched by users using keywords or phrases.
To improve its customers' ability to search for knowledge articles, UMS can use two options:
B) Create synonyms for specific search terms.
Synonyms are words or phrases that have the same or similar meanings, such as "TV" and "television" or "fix" and "repair". By creating synonyms for specific search terms, administrators can ensure that customers can find relevant articles even if they use different words or spellings than the ones used in the articles. Reference: https://help.salesforce.com/s/articleView?id=sf.knowledge_search_synonyms.htm&type=5 D) Promote specific search terms for specific articles.
Promoted search terms are keywords or phrases that administrators can associate with specific articles to boost their relevance and ranking in search results. By promoting specific search terms for specific articles, administrators can ensure that customers can find the most helpful or popular articles for their queries. Reference: https://help.salesforce.com/s/articleView?id=sf.knowledge_search_promotion.htm&type=5

A joined report is a type of report that allows you to create multiple report blocks that provide different views of your data. Each report block can have its own fields, columns, sorting, and filtering. A joined report can only be created from summary or matrix reports. You can use a joined report to show data from different report types or data sources on a single report. In this case, you can use a joined report to show Accounts with Open Cases by creating two report blocks: one for accounts and one for cases with a filter for open status. You can then join the two blocks by a common field such as Account ID or Account Name. Reference: https://help.salesforce.com/s/articleView?id=sf.reports_joined_format.htm&type=5 https://help.salesforce.com/s/articleView?id=sf.reports_examples_joined.htm&type=5

To debug platform events in Apex code, you need to set a debug log on the Automated Process entity. This entity represents an automated process user that runs flows and processes in your org. By setting a debug log on this entity, you can capture the events that are published and consumed by your flow and Apex code, as well as any errors or exceptions that occur during the execution. Reference: https://developer.salesforce.com/docs/atlas.en-us.platform_events.meta/platform_events/platform_events_debug.htm https://help.salesforce.com/s/articleView?id=sf.code_add_users_debug_log.htm&type=5