Working with data sources
About third-party custom fields
Last Updated: January 13, 2026The following data sources have custom fields in the data source itself. Note that these custom fields are different from the Supermetrics Custom fields you can create on the Supermetrics Hub. If a data source is not listed on this page, it doesn’t have third-party custom fields. You can identify a third-party custom field by the prefix c_ in...
About timezone settings and timezone discrepancies
Last Updated: January 13, 2026My pro metrics data sources use APIs to query the data, and some APIs have a fixed timezone. This means that you can see slight discrepancies in the results if your timezone differs from the API timezone. With most Supermetrics products, it’s possible to adjust the product and/or query timezone to match the API timezone...
About aggregatable and non-aggregatable metrics
Last Updated: January 13, 2026Sometimes, you may look at your Supermetrics report and realize that there’s something off in your Reach or User metrics compared to the data source user interface. Why is that? In this article, we explain why this can happen. In simple terms, there are two types of metrics that can be pulled to your report:...
About reach
Last Updated: January 13, 2026Reach is a metric that measures how many individual users have seen your content. You can split reach by dimensions such as posts, campaigns, or time ranges and get separate reach values for these. However, you can’t sum up the reach of, for example, different campaigns. Summing up reach isn’t allowed, and trying to sum...
My Pro Metrics data source historical range limits, known API delays, and refresh window recommendations
Last Updated: January 17, 2026We’ve listed below the different limits for historical ranges, API delays, and recommended refresh windows of data available from different data sources. A standard My Pro Metrics subscription supports as much history as each data source allows (data warehouse, cloud storage, and data lake subscriptions are an exception with an upgradable limit of 2 years)....
How to convert currencies in my pro metrics
Last Updated: January 17, 2026With My Pro Metrics, you can convert currencies in different ways in your queries. Some data sources support converting your ad spend value into a different currency. See below for data sources that support currency conversion. For data sources that don’t support currency conversion, you can use our Custom fields to convert currencies. Conversion rates...
How to fix errors with incompatible fields, or fields that can’t be fetched together
Last Updated: January 17, 2026When running queries with My Pro Metrics, you might encounter one of these errors: This happens because one or more of the query’s fields can’t be requested together. Often, this is due to restrictions in the data source’s API. These errors can also appear when the incompatible fields are included in filters and sorts, rather...
How to fix My Pro Metrics deduplicated values errors
Last Updated: January 17, 2026When working with unique count metrics — like Facebook’s “Reach” metrics, for example — you might see this error appear in a cell in Google Sheets: Looker Studio (formerly Data Studio) might show 0 or “null” instead of this error message. This error occurs when the data source calculates that the metric you’re using is...
About daily request quotas and limits
Last Updated: January 17, 2026Many data sources have limits on how many requests an API account can make in a specific period of time. These are referred to as API request quotas or request limits. If you reach a quota or request limit If you see this error message, you’ve likely reached the API request limit for your data...