Create a Custom Audience From a User Identifier ( UID ) List

This article contains instructions on how to create a Custom Audience from your UID list.

How to Create a Custom Audience from your list:

To create a Custom Audience from your list:

  1. From Ads Manager, go to Audiences.
  2. Select Create Audience > Custom Audience > Customer list.
  3. Click Add from your own list.

Next steps

 Add your UID list

Select the Original Data Source dropdown to specify the original information source, then either upload your list as a file (.txt or .csv) or copy and paste it in the content field. Add a name and description for your audience, then select Next.

Note: You can download a data file template FB created that's set up to help system map your data more easily.

 Edit and upload your data

Preview how FB classified your data, then update accordingly. You may need to change your list to maximize the number of identifiers FB can use.

Classification Guide
  • The green checkmark  means FB think FB know what type of data this is (but you can correct us if FB wrong - see below) and will use it when trying to match the information in your list to people on FB. Only the data with this symbol gets uploaded for matching.
  • The orange exclamation mark  means FB not sure what type of data this is or you've told us to leave it out of matching. If FB not sure, you can tell us (see below). Check out our best practices guide to make sure it's formatted in a way FB can use.
  • The red triangle with an exclamation mark  means the data type has been identified (either by us automatically or by you), but FB can't detect a supported format. You may have to reformat the data in your list or select a formatting option from a Choose format dropdown (see below). For example, birthdays can be listed in different formats like MM/DD/YYYY or DD-MM-YYYY. Learn more. You can also leave the data type out of matching (see below).

Note: If you're seeing multiple errors, it may be because FB looking for the wrong delimiter (the punctuation mark that separates data points). You can change this by hovering over "modify the delimiter" and choosing a new one.

What you can do with your data:

Keep in mind that all data needs a type to use it, but only some kinds require formatting details. You only see the Choose format dropdown if it's necessary.

Once you're satisfied, select Create & Upload.

 Take action

After adding your content, FB hash your data, upload it and create your audience for you. This may take a little while if your file is large.

When FB done creating your Custom Audience, FB automatically generate a list of next steps you can take to get the most out of it. You can take one of those next steps immediately or click Done to finish.