The source field in sourceOfFunds declares the origin of the funds being sent. The available values depend on who is sending and receiving.

Individual to Individual

Use these values when both the sender and recipient are individuals:

Value	Source	When to use
1	Salary	Funds from regular employment income
2	Savings	Personal savings or accumulated funds
3	Lottery	Lottery or gambling winnings
4	Loan	Borrowed funds (personal or bank loan)
5	Business Income	Revenue from a personal business or freelance work
6	Business Profit	Profit distributions from a business the individual owns

Business Transactions

Use these values when either the sender or recipient (or both) is a business entity. Applies to: Individual → Business, Business → Individual, and Business → Business transfers.

Value	Source	When to use
7	Settlement	Payment settlement between businesses (invoices, contracts)
8	Others	Any source not covered by the above categories

Example

A freelancer sending business income to family:

"sourceOfFunds": {
  "purpose": 3,
  "source": 5,
  "relationship": 2
}

source: 5 → Business Income (freelance earnings)
purpose: 3 → Family Maintenance
relationship: 2 → Father

Related

Source of Funds overview — When and how to use sourceOfFunds
Purpose values — Reason for the transfer
Relationship values — Sender/recipient relationship codes