Series Depends on Mode of payment

in payment entry form i need to change the document series depends on the mode of payment

thanks in advance

This would require deep coding for erpnext and not through the web interface.
Series can accept only the most least single dynamic part like .### intended for auto numbering.

You still have the option to introduce multi series for payment entry with option “user must select”
for example,
COM/ACC/PE/T-2016-.### i.e transfer
COM/ACC/PE/P-2016-.### i.e payable
COM/ACC/PE/R-2016-.### i.e receivable

Good

the case is series i have in payment entry form

PAY/Cash.#### to be the default if i choose type “Pay” & mode of payment “Cash”
PAY/Bank.#### to be the default if i choose type “Pay” & mode of payment “Bank”
RCV/Cash.#### to be the default if i choose type “Receive” & mode of payment “Cash”
RCV/Bank.#### to be the default if i choose type “Receive” & mode of payment “Bank”

thank you