If you think you're missing data in Facebook Analytics, review this troubleshooting guide.

Check the following areas in Facebook Analytics to make sure you can see the information you care about:

• Log events and parameters correctly: If your events and/or parameters are not logging correctly, you may not see all of the information you should. You can check if your events are logging correctly in Event Debugging.
• Log events for all of your channels: Make sure you're not logging events for one channel (example: Android) and forgetting to log the same event for a different channel (example: iOS). You can check your events and filter by OS in Event Debugging, or review them in Events.
• Create filters that match data from your product: For example, if you only sell products that are between $100 to $1000, and you create a filter to view people who have spent less than $100, you won't see any results.
• Ensure the audience that matches your criteria is large enough: We may not be able to display information when your audiences size is too small. This may mean that you will need to grow your audience before you can view all of your charts, or that you need to adjust your time frame or filters. Learn more about why you may be seeing error messages, such as "Not Enough Data" or "Unknown" in your charts.

Event Debugging helps you check if your events and their parameters are logging correctly.

You can see the last 20 events logged within 24 hours in Activity > Event Debugging. Use Event Debugging to check that events are logging correctly, combining the following filters:

• By an event to make debugging easier.
• By device OSes to check how events are firing on iOS or Android, and so on.
• By app version to see if the issue is specific to a recent release.

Here's an example of Event Debugging.

You set up a custom event, but you're not able to see any information about it in Facebook Analytics, or maybe you aren't seeing the event fire as much as you thought it should. You can use Event Debugging to analyze the values associated with that event as you do tests. You look at Device OS to make sure the event is logging across different operating systems and find it's not firing for Android. Now you can take a look at your Android app specifically and locate the issue.

Note: It may take up to 30 seconds for recently logged events to appear.

You can confirm that events are logging correctly in Activity > Event Debugging in Facebook Analytics. In Event Debugging, you can see the last 20 events logged within 24 hours.

To check event logging in Facebook Analytics:

1. Select Activity from the menu on the left, then select Event Debugging.
2. Trigger an event, or use the drop-down menus at the top right to filter events and specific contexts.

   For Messenger bots, send or receive a message to your Messenger bot.

You should be able to determine if events are logging correctly and sending the appropriate information from this view.

If the event you recently triggered, or the event you'd like to select from the drop-down menu, isn't listed, check your channel's event implementation.

Note: It may take up to 30 seconds for a recently logged event to appear in Event Debugging.

If you're seeing error messages in your Facebook Analytics charts, it may be related to any of the following reasons:

If you see an error message in Facebook Analytics that says you need admin access, you may not have access to view revenue-related analytics. The following standard events display revenue-related analytics:

• Add to Cart
• Add to Wishlist
• Initiated Checkout
• Spent Credits
• Purchase
• Purchase Canceled

To resolve this error, contact an administrator for the event source or event source groups you'd like to view and request admin access. Share the following help article with them if they need a reminder about how to give you access: Give Facebook Analytics Users Access to View Revenue-Related Analytics.

Facebook Analytics enables you to learn about the types of people using your product, how they got there and what actions they are taking. Facebook Ads Manager is designed to help you create, manage and measure your Facebook ads.

Both tools log and report events differently, like install events, for example.

Learn more about Facebook Ads Manager.

Facebook Analytics enables you to better understand the people who use your product or engage with your business. To see the actions people take, we recommend that you refer to your pixel's dashboard in Facebook Events Manager.

Facebook Analytics may show a different number of events compared to the Facebook pixel in Events Manager for any of the following reasons:

• You may have applied filters in one product but not in the other, or different filters in each product. Confirm if your filters and dates are the same.
• You may not be sending Facebook Analytics sufficient events and parameters. Troubleshoot Facebook pixel and event setup issues and review best practices to confirm successful Facebook pixel setup.
• Facebook Analytics may sample data, while Events Manager does not.
• Facebook Analytics and Events Manager may take different amounts of time to receive and process your data.

Facebook Analytics may show a different number of active users compared to your Custom Audience for any of the following reasons:

• Active users includes users who interact with your event source, even if they may not be Facebook users.
• A Custom Audience of your users includes only Facebook users.
• A Custom Audience doesn't include people who may have disabled ad tracking.

As a result, you may also see a different number of users in a filter created on Facebook Analytics when compared to a corresponding Custom Audience.