Validation service
There is an online validation service you can use to make sure your transactions (receipts) and points files are correctly formatted before you try to import them into Engage.
You'll find the online validation here: https://datavalidator.voyado.com/.
Follow the guidelines laid out in this section.
Warning
When using the data validator for transactions, be aware that it will NOT detect missing stores or contacts, because the validator is not directly connected to a specific Engage environment. The client should ensure that the stores referenced exist in Engage, as do the contacts. However, when importing that file into Engage, any "bad" lines will just be skipped and logged as errors.