How can i generate an "Income by customer detail" report in QB online. There is only an "Income by summary report available

I've got your back, @ralphcottiers.

Income by Customer Detail report is unavailable in Quickbooks Online(QBO), as a workaround, you can pull up the Sales by Customer Detail instead to track the sales by customer.

You can check out this article to see the complete list of available reports for your QuickBooks Online version: Reports included in your QuickBooks Online subscription.

Please let me know if you have any other QuickBooks reports concerns or anything in QuickBooks. I'm always here to help and provide you additional assistance. Have a great rest of your day!