Navigate to https://wallet.google.com/manage/ and log in to your account.
Once logged in, browse for your purchase or use the search function to locate it.
After finding the order, click on it to open the transaction details page for the order.
Look in the right side of the page for a ‘Transaction’ code. This is the Transaction ID for your order.
The Google Wallet Transaction ID is typically formatted like this:01234567890123456789.token.0123456789012345 or 0.G.123456789012345