What do you mean by the word (payload)?
On PASC sub-accounts are called payloads. If you go to Poloniex and get a deposit address for Pascal coin you use their account number and a payload they assign to your account. Any deposits to this account and payload get credited to your PASC balance on Poloniex, for example. Payloads per account are unlimited.
payload to an existing account. how to respond to deficiencies account? on earth there are 7 billion people more. to provide for the sub-account of the existing account and be the right answer.