Usually the process is:

1. Go to SA bank. Be very clear about all of the data fields that my bank is asking me, and ask them to tell me EXACTLY what to enter. Get assurance that anything is fine.
2. Send transfer
3. Get transfer back to my bank
4. Call my bank and ask what went wrong. They blame SA bank
5. Call SA bank and ask what went wrong. They blame other bank and tell me that something they told me was wrong, and maybe I should try changing X from Y.
6. GOTO 2 about 4 more times until it finally goes through.