The CSV file has to include headers in the first line. All properties which cannot be mapped to standard customer fields will be added to the metadata object.
Standard customer fields mapping
No spaces allowed in field names
Id, Name, Email, Phone, Birthdate, Source_id, Address_line_1, Address_line_2, Address_Postal_Code, Address_City, Address_State, Address_Country, Description, Metadata_name_1, Metadata_name_2
Update Customers using CSV
If you would like to update customer's data, you can do it using the CSV file with new data. However, remember to include a source_id in your CSV file to manage the update successfully.
This API request starts a process that affects Voucherify data in bulk.
In case of small jobs (like bulk update) the request is put into a queue and processed once every other bulk request placed in the queue prior to this request is finished. However, when the job takes a longer time (like vouchers generation) then it is processed in small portions in a round-robin fashion. When there is a list of vouchers generation scheduled, then they will all have the IN_PROGRESS status shortly. This way, small jobs added just after scheduling big jobs of the same type will be processed in a short time window.
The result will return the async ID. You can verify the status of your request via this API request.