In order to have an overview of your actions in the system please go to History.
1. Click "Show details" button
2. You will find your GTIN and LOT number.
3. Click "Loop" button
4. You can have a look at the EPCIS event XML.
If additional information is requested by Metro such as Best Before Date or Weight, they have to be added as well but GTIN and LOT are the two basic information for traceability.
You can also have a look hereby in the attachments at our short PIER eLearning tutorial or on PIER website (Tutorials -> General).