To find your unique Measurement ID open your GA4 Property (From Google Analytics).

Click the gear icon in the lower left-hand corner to enter the Admin section.

  1. Within the Admin section, find the property column and open Data Streams.
    Finding GA4 Measurement ID screenshot example
  2. Select your data stream, and you will see the associated Measurement ID in the top right corner; it will look like G-A2ABC2ABCD.
    Create a GTM Account screenshot of required fields.