A file from an ERP system can be imported by email, or a system can call the API.
For email, send an Excel or CSV file to the mailbox set up for your company. An administrator lists the allowed sender addresses under Settings, System, on the Mail tab. A sender that is not on the list is rejected. The sender receives the import log by email.
An Excel file uses the same columns as an import in fmcgProducts. Each row is matched on GTIN (D8165) and Target market (D8255). See How to import and export with Excel. A file that uses different column names needs an import mapping, for example to convert kilograms to grams.
A system can create and update products without a file. See API: Integration with fmcgProducts and fmcgProductsIntegrator from external systems.