Is a duplicate always invalid?

It is a critical signal unless the export intentionally contains multiple event types per order.

Transaction ID, transaction_id, order ID and common aliases.

Free tool by Clarvivo · no login

Find repeated transaction IDs before they inflate purchase reporting

Upload a purchase export to detect duplicate and missing transaction or order identifiers.

Upload an ecommerce or GA4 export with transaction/order IDs. We find repeat and blank IDs that can inflate purchase reporting.

This tool answers: Which transaction IDs are repeated or missing in my purchase export?

Enable JavaScript to run the check — the diagnosis itself is free and needs no account.

A repeat purchase event can quietly inflate revenue in GA4 and ad platforms while the store remains correct.

Transaction IDs make repeat firing measurable, but only when every row carries a stable identifier.

These answer the questions this one tends to raise.

So you can trust the result — and your developer can verify it.

Locate common ID columns
Transaction, order and purchase ID aliases are recognised.
Count repeats and blanks
The output provides row-level evidence without retaining the source file.

Is a duplicate always invalid?: It is a critical signal unless the export intentionally contains multiple event types per order.
What IDs work?: Transaction ID, transaction_id, order ID and common aliases.

Clarvivo reconciles tracking claims with payment truth.