Question: how to send money to western union via mpesa?
Answer: OPt in. Customer JOURNEY - *840# Dial *840# Select Opt in. Read Terms and conditions. Accept / Decline. Enter M-PESA PIN. Then Wait for confirmation SMS.
USSD Procedure. Dial *840# Select Western Union Location. Select New Recipient. Enter First name. Enter Last name. Enter Middle name. Enter Amount. ... 
MySafararicom App Procedure.