When you want to create a Product Image Exists operation for a Product Image, insert a Connector Shape and follow all the steps described in Create an Operation.
In the Set Properties shape, specify the Product ID (SKU) that you would like to check if its product image exists.
The connector setup should look like this:
The last field 'Operation' (which relates to Step 7 in the common flow) has the following options.
The operation checks if the image exists for this product SKU.
Standard Action Response Schema
See Standard Action Response Schema for Product Image Operations.