i hope you are doing well. 

I have a question here, as there are no SUB ACCOUNTs yet in ZOHO Books, how can i adjust the Bills or Invoices if I am dealing with a contact as both i.e Vendor and Customer. 

Zoho Books is a good Software for Basic Business needs and i understanding your team is constantly working on it to make it a better software for all sort of uses in Business. But i am very disappointed to that progress is very slow. despite of being asked couple of times for the SUB ACCOUNTs still it is not in your utmost agenda.Adding this feature will be really helpful for the users. 

I hope if you can add SubAccounts in your immidiate agenda. 

regards,

Abdullah