You have two different options for entering your french email address list Analytics web property ID. The first option is to manually enter the IP for the tag. This is easy to do, but you will need to repeat the process for every other Analytics tag you set up.
To manually add your web property ID, you must first log in to your Google Analytics account. Once there, open the admin panel and choose "Property Settings". You will find your tracking ID in the space provided below:
Back in GTM, make sure to check the box on the tag that says "Enable overriding settings in this tag". You will see a field where you can enter your tracking ID. There is a second option to enter the web property ID.
Instead of entering the ID for each tag, you can create a custom variable. That variable will always contain the ID. You can add it to a tag with one click. As mentioned above, GTM has two types of variables. If you plan to create a custom tag, you should understand how each variable works.
Built-in variables are variables that GTM can automatically define for you. The tool can detect elements in a tag's code and use them to identify the variable.
Most of the common variable types are included in GTM. These include click-related or page-related variables. You can add these variables via the "Built-in Variables" area of the "Variables" section of the GTM workspace.
