Toast uses alphanumeric GUIDs format to configure item ids.
Item ID will be configured in the pattern mentioned below:
Below is an example from the redemption logs where the item id's configured can be located:
Below is an example of a receipt where these item ids can be seen:
Line Item Selector can be located by scrolling the path "Platform > Settings > Line Item Selector" and search the Line Item Selector (LIS) by name.
I have attached an example of how the GUIDs will be displayed in the LIS:
If further assistance is required, submit a ticket to Punchh Support. (For help submitting a ticket, click here)