preventDuplicateTransactionsTask

preventDuplicateTransactions Task

This task will take the current purchase event transaction_id and save it into the current browser storage. If there's a subsecuente purchase event with the same transaction_id the purchase event will be removed from the payload.

This tasks relays on cookies and localStorage to keep track of the transactions. Also it keeps both storages synched, meaning that if the user clears it's cookies localStarage will be read and cookie will be recovered.

Since a request may contain more than one purcahse event, instead of blocking the hit, individual purchase events are removed from the payload.

Usage

Task Code

var preventDuplicateTransactions = (...) => {...}

You can grab the code for this task from dist/tasks/ folder

Code Example

var GA4CustomTaskInstance = new GA4CustomTask({
 allowedMeasurementIds: ["G-DEBUGEMALL"],
 tasks: [
  (requestModel) => preventDuplicateTransactions(requestModel, '__transaction_cookie'), 
 ]
});

Parameters

preventDuplicateTransactions(requestModel, '{{storeName}}')

Parameter	Type	Description
storeName	string	The cookie name / localStorage name to be used to keep track of transactions, __ad_trans_dedup is used by default