I am looking into a GA4 ecommerce set up that isnt reporting 100% accurately.(using tag manager)
I set up a report (exploration/Freeform) with Transaction id's as rows and purchases and purchase revenue as values as part of my investigation.
I am seeing purchases with no transaction ID's, I am also seeing some transaction ID's with multiple purchases (I understood there should always be only 1 pre trasaction ID)
Trying get more information by getting some custom parameters included, I see that the Event add_payment has the parameter payment_type -> thuinking of adding it into the purchase event but cant find any info wether its supported or how could I check if its included in the data layer values during the purhcase event in the first place.( wil would love a tutorial on how to check the data layer vlues using dev tools, found a few but didnt manage to view the details like the tutorial suggested, the site is a single page web app).
Can anyone offer any advice? (see link for sample of what I am seeing in my report) Thanks in advance
Sam
EDIT: I added an additional image, shows how the funnel steps are populated with actions but all transaction IDs & revenue have none, the site is a single page application and this is making me think that events are firing mulriple times (looks like twice) but that previous steps arent connected to the events taht are recorded as transactions