Need Two Naming Series

while saving a document in a transaction(eg.Sales Order) need to create two naming series at a time for one document
eg(s-0001
P-0001)

Check out this link and ensure to check the option “User must always select”

My Requirement is ,while creating a Sales order need to generate Two print Formats which is having unique naming series
Eg.First Print as (S-0001)
Second One is (P-0001)

Unfortuantely that is not a native function in ERPNext. It will have to be done in some customized fashion by a developer.

BKM

Use two different print format and customize the document name in each print format .
For every print select the required print format.