Fix discrepancies and errors in conversions with cart data setup

This means that some conversion actions that used to send cart data are no longer sending any cart data parameters. This indicates that cart data parameters were fully removed for the given conversion action.

To fix this, you can:

• Verify that the cart data parameters are implemented correctly. To do this, complete multiple test orders, ideally through different checkout flows, such as website or different versions of your app, to see if the parameters are passed correctly.
• Once you’ve confirmed that a conversion action is not passing any cart data parameters, please implement them in your checkout flows.

This means that some of your conversion events are not passing any cart data parameters, not even the items[] array parameter.

To fix this, you can:

• Verify that the cart data parameters are implemented correctly. To do this, complete multiple test orders, ideally through different checkout flows, such as website or different versions of your app, to see if the parameters are passed correctly.
• Once you’ve confirmed that conversion events are not passing cart data parameters, please implement them in your checkout flows.

This means that your conversion events are passing the items[] parameter, but the items array is empty, not containing any item ID, price, or quantity parameters.

To fix this, you can:

• Verify that the cart data parameters are implemented correctly, specifically that the items array parameter is not empty. To do this, complete multiple test orders, ideally through different checkout flows, such as website or different versions of your app, to see if the items array includes the expected values (item_id, price, quantity) for every sold product.
• If your conversions are not passing those parameters, please implement them in your checkout flows.

This means that you’ve set up cart data parameters, but some parameters are missing, or they have an incorrect format.

To fix this, you can:

• Verify that the cart data parameters are implemented correctly. Parameter issues include:
  • Item ID missing: Make sure you’re sending an Item ID parameter for every product you sold
  • Item price incorrectly formatted or missing: Make sure you’re sending a single unit price for every item. Make sure the price is a valid number, for example, 12.50.
  • Item quantity incorrectly formatted or missing: Make sure that the item quantity is valid for each product sold in the transaction, for example, 1.
  • Discount incorrectly formatted: Make sure the discount value you’re sending is a positive number. The positive number will be subtracted from the cart’s revenue. Negative numbers, percentage values, or coupon codes will not be processed.
• Once you’ve fixed the parameter issues, complete multiple test orders, ideally through different checkout flows, such as website or different versions of your app, to verify that the parameter issues no longer occur.

This means that the value being passed in the items.item_id or items.id parameter can’t be found in your Merchant Center. This could be because the items.item_id or items.id parameter being passed is incorrect, or because the sold product is not part of your Merchant Center, or your Google Ads account is not linked to your Merchant Center account.

To fix this, you can:

• Download the list of item IDs flagged in the alert. These are the most recent item IDs that were not found in Merchant Center account linked to the Google Ads account
• Check whether these specific item IDs are listed in your Merchant Center.
  • Typically the items exist in your Merchant Center, but the value being passed in the transaction with items.item_id or items.id parameter is different from the id attribute in your Merchant Center.
    • If this is the case, please change the value that’s being passed in the transaction as items.item_id or items.id to match the value in the Merchant Center.
    • Please don’t change the id attribute value in the Google Merchant Center to match what’s being passed in the transaction. The value passed in the Google Merchant Center is used to track the product's performance history in Merchant Center and Google Ads. If you change the ID, you'll overwrite your product and its history.
  • If these item IDs have not been added to your Google Merchant Center, please consider adding these products to your Merchant Center.
    • Recommendation: As a best practice, try to have every item sold on your website be included in your Merchant Center, even if you’re not actively targeting these items in your ad campaigns. Use the excluded_destination attribute to exclude items in your data source from showing for Shopping ads or free listings.
  • If these item IDs exist in a Google Merchant Center account that’s currently not linked to your Google Ads account, link these accounts.

This means that some conversions reported products where we haven’t been able to lookup their cost of goods sold in your Merchant Center.

To fix this, you can:

• Download the products flagged in the alert. These are the most recent products that were found not to have cost of goods sold in your Merchant Center.
• Review your Merchant Center account for the products flagged and check if the cost of goods sold attribute is correctly set for these items.