There you need specific bank and its code, before you include the branch and beneficiary account information so the funds can be sent.
Swift is a communication network used by banks, brokers, financial institutions and corporations to exchange messages. Those transfer interfaces that require an 11 digit code would enter NEDSZAJJXXX.
The SWIFT code for its primary office is NEDSZAJJ:
NEDS identifies Nedbank
ZA is the country code for South Africa
JJ is the code for Johannesburg
Nedbank has not implemented the extended code of 11 digits and all SWIFT transfers to its accounts are directed to the primary office for processing. Through the use of SWIFT codes, money could be wire transferred internationally easilly.