One of my client said send me invoice in his mail form my mail ID not from paypa.com Now what invoice number I have to mention in the invoice letter? Should I mention any number like RJF1, RJF2 Or is there any other thing? Please help.
You can make an invoice in Microsoft Excel as well with any number of your choice (1,2,3 OR A1,A2,A3 OR something like that) DON.
Yes, just make up an invoice number in any format you want - he just wants it for his record so he can crosscheck payments against invoice numbers. You might want to decide on a format so that you can use sequential numbers should this situation arise again.