How to show REIMBUREMENT Claimed as pure agent as per section 33 of CGST Act?

How to show REIMBUREMENT Claimed as pure agent as per section 33 of CGST Act?

Dear All,
               My problem is, when i have to debit client account for reimbursements, we have show it as "OUT OF SCOPE" to make it a part of reimbursement in TAXI INVOICES, which is shown correctly in GSTR 1 and 3B. But the problem is, ZOHO still count it as art of the turnover, which is creating problem for the CA. He has asked me to create a DEBIT NOTE to debit clients account for reimbursements, but while making debit note, Zoho asks for underlying invoice for creating debit note. Kindly advice, what can be done to debit clients account for showing Reimbursements, so that turnover is not affected by the Reimbursements claimed as pure agents.