Commission Agent GST registration

SAC 998592 Collection agency services

This service code includes services consisting of the collecting of accounts, cheques, contracts or notes and of the remittance of the money to the client; collection of regular accounts (e.g., utility bills) and the recovery of delinquent accounts; outright purchase of delinquent accounts and debts and subsequent recovery.

https://www.cbic.gov.in/resources//htdocs-cbec/gst/Explanatory_notes.pdf

sir,
can you point out how to prove principle and agent relationship.
thanks in advance

This circular may be helpful for you...

https://www.cbic.gov.in/resources//htdocs-cbec/gst/Circular_No.57.pdf

thanks for your immideate reply.
it is new for me.
can clarify the following, whether it can be treated as P&A relationship is established.

if principle makes supply to agent not on the basis of commission or fixed % of turnover. Income of the agent is profit added by him into consideration paid by him to supplier.