NOT ABEL TO ADD EXPENSES OF PURCHASE BILL WHO IS ALSO MY PRODUCT BUYER WHAT TO DO...?

It looks like they're your customer and vendor at the same time, Abhishekmanot.

If you've set them up as a customer already, you'll have to create another supplier profile for them. This way, you can create a bill. Let's ensure the name is slightly different from the customer's name, like adding another syllable or letter to the name.

Once done, you can create the bill. 

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